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Android check internet connection [duplicate]
... This answer is incorrect. If you're connected to a network that does not route to the internet this method will incorrectly return true. Note that getActiveNetworkInfo's javadoc says you should check NetworkInfo.isConnected(), but that is also not sufficient to check that you're on the in...
Getting only response header from HTTP POST using curl
..., in my opinion. It is easy to remember, it actually sends GET request and doesn't download the whole response body (or at least doesn't output it). The -s flag is nor necessary.
– skozin
Oct 11 '16 at 14:38
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An expression tree may not contain a call or invocation that uses optional arguments
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The underlying expression tree API does not support optional arguments.
For IL-compiled code the C# compiler inserts the default values at compile time (hard-coded), because the CLR does not support calling methods with optional arguments either when the argu...
Iterate through a C++ Vector using a 'for' loop
...int of development you need to switch to another container, then this code does not need to be changed.
Note: Writing code which works with every possible standard library container is not as easy as it might seem to be.
sh...
Seeding the random number generator in Javascript
...oroughly. This is often seen in reference implementations of PRNGs, but it does limit the number of initial states.
var seed = 1337 ^ 0xDEADBEEF; // 32-bit seed with optional XOR value
// Pad seed with Phi, Pi and E.
// https://en.wikipedia.org/wiki/Nothing-up-my-sleeve_number
var rand = sfc32(0x9E...
PHP - Extracting a property from an array of objects
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This solutions doesn't answer the question because, array_column doesn't work with an array of objects at all. Since PHP 7.0.0 is is possible: stackoverflow.com/a/23335938/655224
– algorhythm
May 23 '1...
Get filename and path from URI from mediastore
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Does not work. cursor is null. And I am not on Android 4.4+, I'm on 4.1.2.
– matteo
Apr 24 '14 at 17:39
1...
Why are global variables evil? [closed]
...nal input from I/O devices (usually—see below).
Evaluation of the result does not cause any semantically observable side effect or output, such as mutation of mutable objects or output to I/O devices.
Having global variables is violating at least one of the above if not both as an external code ...
How to delete a file or folder?
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If the file doesn't exist, os.remove() throws an exception, so it may be necessary to check os.path.isfile() first, or wrap in a try.
– Ben Crowell
Jul 4 '18 at 0:00
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Best way to detect that HTML5 is not supported
The standard way to deal with situations where the browser does not support the HTML5 <canvas> tag is to embed some fallback content like:
...