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How do you check if a variable is an array in JavaScript? [duplicate]
...ork as variable instanceof Number always returns false. Update: instanceof now goes 2/3 the speed!
So yet another update
Object.prototype.toString.call(variable) === '[object Array]';
This guy is the slowest for trying to check for an Array. However, this is a one stop shop for any type you're l...
How to round a number to significant figures in Python
...
I have created a package that does this now and is probably easier and more robust than this one. Post Link, Repo Link. Hope this helps!
– William Rusnack
May 23 '17 at 12:09
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How is OAuth 2 different from OAuth 1?
... criticism here is against the user experience. With OAuth 2.0, there are now new ways for an application to get authorization for a user.
OAuth 2.0 no longer requires client applications to have cryptography. This hearkens back to the old Twitter Auth API, which didn't require the application to...
How to set environment variables in Python?
...oder It's true for all processes on Unix-like operating systems. I don't know about the other operating system. Note that shell variables are not stored in the environment unless you export them.
– Sven Marnach
Jan 16 '17 at 6:56
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Create an enum with string values
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TypeScript 2.4
Now has string enums so your code just works:
enum E {
hello = "hello",
world = "world"
};
????
TypeScript 1.8
Since TypeScript 1.8 you can use string literal types to provide a reliable and safe experience for ...
How can I iterate over an enum?
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Except now you've actually allocated memory when an enum, provided it is zero-indexed and strictly continous, can do that task without allocating memory.
– Cloud
Jan 17 '14 at 23:02
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Should I compile with /MD or /MT?
...s with older versions. The newer versions would be gone. This is commonly known as "dll hell", see en.wikipedia.org/wiki/DLL_Hell
– Adrian Grigore
Sep 18 '12 at 19:24
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How to get nice formatting in the Rails console
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Its now YAML::ENGINE.yamler = 'psych'
– jumpa
Dec 5 '13 at 5:53
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How do JavaScript closures work?
How would you explain JavaScript closures to someone with a knowledge of the concepts they consist of (for example functions, variables and the like), but does not understand closures themselves?
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How to use Active Support core extensions
... up loading a lot of unneeded stuff with a simple require 'activesupport'. Now we have to do things like
require 'active_support/core_ext/object/blank'
If you don't care about granularity, you can choose to load bigger chunks. If you want everything in one big gulp use...
For 1.9.2:
rvm 1.9.2
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