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Java 8 functional interface with no arguments and no return value
...n't seem right to me to use Runnable where it's not intended for execution by a thread; seems misleading. Runnable is defined as a FunctionalInterface because it meets the specification of a functional interface and can be created using lambda syntax. Why not create your own functional interface? se...
Check if element is visible in DOM
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If you're interested in visible by the user:
function isVisible(elem) {
if (!(elem instanceof Element)) throw Error('DomUtil: elem is not an element.');
const style = getComputedStyle(elem);
if (style.display === 'none') return false;
if (s...
Hidden features of C
...rs to implement, e.g., fast indirect-threaded code interpreters (FORTH) or byte-code dispatchers, or to simulate OO-like virtual methods.
Then there are hidden gems in the standard library, such as qsort(),bsearch(), strpbrk(), strcspn() [the latter two being useful for implementing a strtok() repl...
How do I stop a Git commit when VI is on the screen waiting for a commit message?
...ommit message (only the first few rows not beginning with a #) for example by holding v and using arrow keys to select it and then pressing Delete. Quit with :wq to apply changes! If you use :q! the changes will be lost and the previous commit message will be used.
When using VIM it's ok in both c...
Why would iterating over a List be faster than indexing through it?
...to the other implementation of List which is ArrayList, that one is backed by a simple array. In that case both of the above traversals are equivalent, since an array is contiguous so it allows random jumps to arbitrary positions.
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jQuery .val change doesn't change input value
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This is totally correct, by using setAttribute or jQuery's attr you will also affect the DOM element's value: jsfiddle.net/a8SxF/1
– TheZ
Aug 8 '12 at 21:58
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How to set -source 1.7 in Android Studio and Gradle
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FIle-> Other Settings -> Default Settings -> Compiler (Expand it by clicking left arrow) -> Java Compiler -> You can change the Project bytecode version here
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Display current time in 12 hour format with AM/PM
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Easiest way to get it by using date pattern - h:mm a, where
h - Hour in am/pm (1-12)
m - Minute in hour
a - Am/pm marker
Code snippet :
DateFormat dateFormat = new SimpleDateFormat("hh:mm a");
Read more on documentation - SimpleDateFormat ...
How do I read any request header in PHP
...X with the name of the header you need in UPPERCASE (and with '-' replaced by '_')
$headerStringValue = $_SERVER['HTTP_XXXXXX_XXXX'];
ELSE IF: you run PHP as an Apache module or, as of PHP 5.4, using FastCGI (simple method):
apache_request_headers()
<?php
$headers = apache_request_headers();...
Suppress echo of command invocation in makefile?
...The effect of preceding the command with an @ can be extended to a section by extending the command using a trailing backslash on the line. If a .PHONY command is desired to suppress output one can begin the section with:
@printf "..."
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