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Collapsible/Fold able Utility Crate is a smart, space saving solution to simplify all your activities, trips and day-to-day tasks.  A brilliant space-saving solution, when not in use it folds flat, making it easy and convenient to store.  These all-purpose utility crates can also increase the ease and efficiency of daily task and storage, both indoors and out.  The BigAnt Smart Crate is specifically designed for both industrial and everyday usage, including but not limited to grocery shopping, storing toys, camping, and traveling.   Best of all – It’s easy to clean, hose off or wipe out, well made construction material, and very durable. Sturdy bottom base with strong making them ideal for heavy duty projects.  BigAnt Smart Crates are guaranteed to hold weight ranging from 30 kg to 90 kg depending on the model.  Never again waste your money and no worries about breaking apart of its advertised weight capacity. These crates are ultimate space-saving solution that combines packing, transport and storage into one reusable, collapsible container, interlaced design that adds to the durability and also allows you to easily view the content.  Your instant storage solution and great for indoor/outdoor storage.   Fold flat and stock when not in use. Available in a variety of exciting colors.  Get the most out of your craft storage with this collapsible crate.  The primary benefit of having collapsible is that they create more efficient storage space.  They take up less space when they are collapsed, freeing up storage space for other items when the crates are not in use. Comfortable, side grip handles make heavy lifting a breeze.  The interlocking nesting system provides stability for vertical stacking.  It’s extremely easy to set up just attach the caster wheel to the crate wheel package.  Compatible with caster wheels specifically designed for both industrial usage for extra convenience and great for any outdoor activities. The BigAnt Crates are an innovative addition to the materials handling market.  Made from high grade polypropylene, strong durable plastic and ergonomically designed.  Making them simple to use, easily be wiped clean and suitable for the home or workplace. These crates are advantageous to any business with large scale storage and shipping needs because they can economize storage space, they reduce packing and shipping costs, they are reusable, they make items more transportable, and they help to protect product for storage and shipping.            
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New standard for foldable crates - BigAnt Smart Crate
INPACK GLOBAL CO., LTD has developed and introduced new packaging solutions for customers who want new trends. Our focus is on customer's packing solutions and saving their logistics costs. The world is currently facing with environmental issues and a lot of companies are forced to bear a great deal of cost due to industrial wastes, which makes recyclable packaging mandatory to crown all as a means to saving packaging costs. However, our products are not limited to industrial use. The BigAnt Smart Crate is specifically designed for both industrial and everyday usage, including but not limited to grocery shopping, storing toys, camping, and traveling. Its main features are as follows:
(1) Highly Durable: Tolerable in extreme temperatures, highly resistant to UV rays and chemicals, designed by 'blow process,' not by injection, allowing the final design to safely load heavy products
(2) Safe Design: No screws or nails used and no sharp edges, protecting both workers and products alike. Applicable to all industries including foods, pharmacies, electronics and chemicals.
(3) Heavy Duty: Snap-lock keeps form in shape in any situation. Holds weights ranging from 60kg (132 lbs) up to 90kg (200 lbs) depending on the model. Folds only when user pulls the 'unlock' bars.
(4) Collapsible & Stackable Design: Reduces the full setup size down to 70% when completely folded. Perfect stacking alignment made possible with interlocking vertical design.
IP734235 DIMENSION & CAPACITY DETAILS: 28.74" x 16.54" x 13.78" (730x420x350mm) / 90 Liters (23.8 Gallons)

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Smart crate ant big

Description

New standard for foldable crates - BigAnt Smart CrateINPACK GLOBAL CO., LTD has developed and introduced new packaging solutions for customers who want new trends. Our focus is on customer's packing solutions and saving their logistics costs. The world is currently facing with environmental issues and a lot of companies are forced to bear a great deal of cost due to industrial wastes, which makes recyclable packaging mandatory to crown all as a means to saving packaging costs. However, our products are not limited to industrial use. The BigAnt Smart Crate is specifically designed for both industrial and everyday usage, including but not limited to grocery shopping, storing toys, camping, and traveling. Its main features are as follows:(1) Highly Durable: Tolerable in extreme temperatures, highly resistant to UV rays and chemicals, designed by 'blow process,' not by injection, allowing the final design to safely load heavy products(2) Safe Design: No screws or nails used and no sharp edges, protecting both workers and products alike. Applicable to all industries including foods, pharmacies, electronics and chemicals.(3) Heavy Duty: Snap-lock keeps form in shape in any situation. Holds weights ranging from 60kg (132 lbs) up to 90kg (200 lbs) depending on the model. Folds only when user pulls the 'unlock' bars.(4) Collapsible & Stackable Design: Reduces the full setup size down to 70% when completely folded. Perfect stacking alignment made possible with interlocking vertical design.IP403026 DIMENSION & CAPACITY DETAILS: 15.55" x 11.61" x 10.24" (395x295x260mm) / 25 Liters (6.6 Gallons)

Features

  • SMALL CRATE SIZE AND WEIGHT: Outside - 15.6L x 11.6W x 10.2H in. | Inside - 14.5L x 10.6W x 9.9H in. | Collapse to 2.95" in thickness, Vol. Capacity: 26 quart (6.6 gal/25 L) | Gross Weight: 3.1 lb. Weight Capacity: 132 lb.
  • HEAVY DUTY WEIGHT CAPACITY: We know that one of the biggest concerns of collapsible crates is the actual weight capacity is not even as close as what was advertised; BIGANT's smart crates are GUARANTEED to hold weights ranging from 30kg (132 lbs) up to 90kg (200 lbs) depending on the model; Never again waste your money on collapsible crates that barely hold a tenth of its advertised weight capacity.
  • BUILT-IN LOCKS FOR CRATE WALLS: BIGANT's smart crates walls are designed with patented SNAP-CLOSE locking system, which is the 1st among straight wall containers. The walls will maintain crate shape in any situation and collapse ONLY when you pull the 'unlock' bars on the front/back of the crate. Never again waste your money on collapsible crates that literally 'CRUSHES' and stay like that forever
  • CRATE INTERLOCK FOR VERTICAL STACKING: Conveniently stack crate on top of crate with ease as BIGANT's smart crates' interlocking nesting system provides extremely stable vertical stacking; you can also keep one side of the crate wall open and stack another crate on top to access the contents in each crate on one side.
  • CRATE LID AND WHEELS: Lid available but sold separately (ASIN B07GY116DS or Search "bigant crate lid"); BIGANT's smart crates feature a compatible bottom base that is designed to fit BIGANT caster wheels with pre-drilled mounting holes, However, the SMALL size crates DON'T SUPPORT this wheels capability

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Product details

EAN

349361179636

UPC

349361179636

ASIN

B075CG9CM3

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BigAnt Smart Crate IP 403026

 Material to be tolerable  in temperatures hit -40 Highly resistant to UV rays and
chemical (no prevention of infectious diseases necessary) Designed not by injection
but by blow process to be highly bearable to heavy load HDPE products used to
prevent damages by chemicals, water, insects, moths, white ants . etc No screws or
nails used and there are no sharp edges to protect workers and products. Applicable to all industries including foods, pharmacies, electronics and chemicals.
 · Boxes can be moved and stored in multi stacked
 · Reusable and cost saving
 · Practical structure where every part is replaceable
 · Packaging system for long-term use
 · Made of eco-friendly recyclable material
 · No toxicity
It adopts the shape of the Eastern window which features a smooth air flow, and the strong construction which improves the strength of the product through the analysis of structural dynamics. Also it is more 1.5 times durable compared with the competitive products, and can be applied with a wide range of colors for using from homewares to cars, camping, sports and storage logistics.
By using the Mark Plate, each company's logo and slogans can be applied on the BigAnt Smart Crate as OEM, ODM products. Moreover it’s the perfect fit for promoting corporate brands in many industries, including freebies, events, housewares, sporting goods, sports and fisheries.

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rxjs is an incredible tool for reactive programming, and today we’re going to dive a little deeper into what observables and observers are - as well as learn how to create our own operators -let’s finally understand observables!

if you’ve used rxjs before and want to understand some of the inner workings and internals to “how” observables work, as well as the operators, then this post is for you too.

so let’s dive in, and understand what an observable is, then we’ll move onto observables and operators.

what is an observable?

an observable is just a function with a few special characteristics. it implements the observer design pattern.

an observable sets up an observer (we’ll learn more about this) and connects it to the “thing” we want to get values from. this “thing” is called a producer and is a source of values - perhaps from a or event in the dom (or even be something more complex such as async logic).

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to better understand observables, we’re going to write our own! but first, let’s take a look at an example with a subscription to grasp the bigger picture:

this example takes an element and passes it into , which returns us an observable of our input’s object when the event name we specified emits (which is why we’re using in the console).

when the input’s event listener fires, the observable passes the value to the observer.

what is an observer?

an observer is quite simple, in the above example the observer is the object literal we pass into our (subscribe will invoke our observable).

is also valid syntax, but we’ll be exploring the object literal form in this post

when an observable produces values, it then informs the observer, calling when a new value was successfully captured and when an error occurs.

when we subscribe to an observable, it will keep passing any values to an observer until one of two things happens. either the producer says there are no more values to be sent, in which case it will call on our observer, or we (as the “consumers”) decide we are no longer interested in the values and we unsubscribe.

when we want to compose the values returned from an observable, before they reach our final block, the value is passed (or can be passed) through a chain of observables, which is typically done via “operators”. this chain is what we call an observable sequence. each operator returns a new observable to continue our sequence - also known as a “stream”.

what is an operator?

as we’ve mentioned, observables can be chained, which means we can do something like this:

here are the steps of this sequence:

  • let’s assume the user types the letter “a” into our input
  • the observable then reacts to this event, passing the value to the next observer
  • the value “a” is passed to , which is subscribing to our initial observable
  • returns a new observable of and calls on it’s observer
  • the call will invoke , which is subscribing to , with the resulting value of the call
  • will then return another observable with the filtered results, calling with the value if the is 2 or above
  • we get the final value through our block

quite a lot happening, and if you’re a little unsure, remember:

each time a new observable is returned, a new observer is hooked up to the previous observable, thus allowing us to pass values along a “stream” of observers that simply do something you’ve asked and call when it’s done, passing it to the next observer.

in short, an operator typically returns a new observable each time - allowing us to continue our stream. as users we don’t need to worry about all the observables and observers which are created and used behind scenes, we only use one per chain - our subscription.

building our own observable

so, let’s get started and write our own observable implementation. it won’t be as advanced as rx’s implementation, but we’ll hopefully build the picture enough.

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first, we’ll create an observable constructor function that takes a function as its only argument. we’ll store the subscribe property on the instance of observable, so that we can call it later with an observer:

each callback that we assign to will be invoked either by us or another observable. this will make more sense as we continue.

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observer example

before we dive into our real world example, let’s give a basic one.

as we’ve setup our observable function, we can now invoke our observer, passing in as a value and subscribe to it:

we subscribe to the observable instance, and pass our observer (object literal) into the constructor (which is then assigned to ).

observable.fromevent

that’s all we actually needed to create the basis of our observable, the next piece we need is a method on the observable:

we’re going to use our observable just like in rxjs:

which means we need to return a new observable and pass a function in as the argument:

this then passes our function to our in the constructor. next up, we need to hook our event in:

so, what’s this argument, and where does it come from?

the is actually your object literal with , and on.

here is the interesting piece. the is never passed through until is invoked. this means the is never “setup” by our observable until it’s subscribed to.

once subscribe is invoked, inside the observable’s constructor the is then called, which invokes the callback we passed to and also passes through our observer literal. this then allows the observable to do it’s thing and once it’s done, it’ll on our observer with the updated value.

okay so what now? we’ve got an event listener setup, but nothing is calling , let’s fix that:

as we know, observables need a “tear down” function which is called when the observable is destroyed, in our case we’ll remove the event:

we’ve not called because this observable is dealing with dom apis and events, so technically they’re infinitely available.

let’s try it out! here’s the full code of what we’ve done:

live example (type, then watch):

building our own operator

building our own operator should be a little easier now we understand the concepts behind an observable and observer. on our object, we’ll add a new prototype method:

this method will be used as such, pretty much like in javascript but for any value:

so we need to take the callback function and invoke it, which in turn will return our desired data. before we can do this, we need the latest value in the stream.

here comes the clever part, we need to gain access to the instance of the observable that invoked our operator. because it’s on the prototype we can do exactly that:

ready for more funk? now we subscribe inside a returned observable:

we are returning the because when we unsubscribe, the unsubscriptions (is that a word?) will flow up the chain, unsubscribing from each observable.

this subscription will allow us to be passed the previous value from our , because it returns a new observable with a property in the constructor, we can simply subscribe to any updates it makes! let’s finish this off by invoking our passed through map:

now we can chain it!

notice how the final block is passed only the and not the object like before? you’ve successfully created an observable stream.

try it again:

hopefully this post was good fun for you :) come learn more rxjs with us!

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