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How to detect if a variable is an array
...ng() (this is guaranteed to work by ECMA-262):
Object.prototype.toString.call(obj) === '[object Array]'
Both methods will only work for actual arrays and not array-like objects like the arguments object or node lists. As all array-like objects must have a numeric length property, I'd check for th...
How do I wait for an asynchronously dispatched block to finish?
...ly even if runSomeLongOperationAndDo: decides that the operation isn't actually long enough to merit threading and runs synchronously instead.
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Get nested JSON object with GSON using retrofit
I'm consuming an API from my android app, and all the JSON responses are like this:
12 Answers
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How to use a servlet filter in Java to change an incoming servlet request url?
... a check in the code if the URL needs to be changed and if not, then just call FilterChain#doFilter(), else it will call itself in an infinite loop.
Alternatively you can also just use an existing 3rd party API to do all the work for you, such as Tuckey's UrlRewriteFilter which can be configured th...
Which way is best for creating an object in JavaScript? Is `var` necessary before an object property
...your example, Person (you should start the name with a capital letter) is called the constructor function. This is similar to classes in other OO languages.
Use way 2 if you only need one object of a kind (like a singleton). If you want this object to inherit from another one, then you have to use a...
How can I pass arguments to a batch file?
...
Another useful tip is to use %* to mean "all". For example:
echo off
set arg1=%1
set arg2=%2
shift
shift
fake-command /u %arg1% /p %arg2% %*
When you run:
test-command admin password foo bar
the above batch file will run:
fake-command /u admin /p password adm...
Allowing interaction with a UIView under another UIView
Is there a simple way of allowing interaction with a button in a UIView that lies under another UIView - where there are no actual objects from the top UIView on top of the button?
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Why CancellationToken is separate from CancellationTokenSource?
...ntended for use in a great many scenarios (such as deep library stacks, parallel computation, async, etc) and thus was designed with many complex use cases in mind. It is a design intended to encourage successful patterns and discourage anti-patterns without sacrificing performance.
If the door ...
How do you suppress output in IPython Notebook?
...nly want to suppress output from particular lines of code in the cell, not all lines. Thanks
– Confounded
Nov 15 '19 at 11:15
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check if a std::vector contains a certain object? [duplicate]
Is there something in <algorithm> which allows you to check if a std:: container contains something? Or, a way to make one, for example:
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