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serve current directory from command line
...nitialized constant INT (NameError). Are you running it on a different platform? Do you know how I can avoid this? But if I write it into a file say myserver.rb then do "ruby myserver.rb", it works fine.
– Tony Jiang
Aug 23 '13 at 0:23
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How to detect user inactivity in Android
...s Session Timeout to be 5 mins.
Does some operations on the app. (all in foreground)
Now User bring Myapp to background and starts some other app.
----> Count down timer starts and logs out user after 5 mins
OR user turns the screen OFF.
----> Count down timer starts and logs out user ...
How to check whether a string is Base64 encoded or not
...-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)$ means the string ends in one of three forms: [A-Za-z0-9+/]{4}, [A-Za-z0-9+/]{3}= or [A-Za-z0-9+/]{2}==.
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Alphabet range in Python
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I wonder if there's a way to do the same for a specific locale, i.e. get the spanish, turkish, etc. alphabets
– Gonzalo
May 6 '16 at 23:39
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How to avoid 'cannot read property of undefined' errors?
...AScript 2020 or later, see optional chaining.
TypeScript has added support for optional chaining in version 3.7.
// use it like this
obj?.a?.lot?.of?.properties
Solution for JavaScript before ECMASCript 2020 or TypeScript older than version 3.7:
A quick workaround is using a try/catch helper ...
Parse JSON String into a Particular Object Prototype in JavaScript
.....) recursively that can automatically resolve properties (with a bit of information provided in advance)
– vir us
Dec 8 '17 at 16:13
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How to automatically remove trailing whitespace in Visual Studio 2008?
...e best solution on this page. It's easily configurable, automatically done for you on demand or on save, it integrates nicely with VS, it has lots of other very useful features. Good find arserbin3.
– Chris R
Jul 20 '12 at 17:24
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How to use if statements in underscore.js templates?
...;/span>
<% } %>
Remember that in underscore.js templates if and for are just standard javascript syntax wrapped in <% %> tags.
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How do I check in JavaScript if a value exists at a certain array index?
Will this work for testing whether a value at position index exists or not, or is there a better way:
18 Answers
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What exactly does an #if 0 … #endif block do?
... even get compiled.
#if is a preprocessor command, which gets evaluated before the actual compilation step. The code inside that block doesn't appear in the compiled binary.
It's often used for temporarily removing segments of code with the intention of turning them back on later.
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