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How to make “if not true condition”?
...fic case, it does indeed work because sysa will be printed which makes the test statement come true. However, if ! [ $(true) ]; then echo false; fi would always print false because the true command does not write anything to stdout (even though the exit code is 0). That is why it needs to be rephras...
iPhone viewWillAppear not firing
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I just tested this in iOS4 and iOS5: This is NOT true: Setting the delegate of a navigationController and then pushing a view to it WILL fire viewWillAppear: etc.
– DaGaMs
Nov 7 '11 at 13:44
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How do I specify unique constraint for multiple columns in MySQL?
...
MySql 5 or higher behaves like this (I've just tested):
you can define unique constraints involving nullable columns. Say you define a constraint unique (A, B) where A is not nullable but B is
when evaluating such a constraint you can have (A, null) as many times you wa...
Illegal mix of collations MySQL Error
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Seems to work for now, i'll accept after some more testing. Do the second queries need to be run once, or at the start of each script?
– Click Upvote
Jun 17 '09 at 19:06
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What is “pom” packaging in maven?
...opriate.
For example some of our applications use:
prepare-package -> test -> package -> install -> deploy
When you mvn install the application it should add it to your locally .m2 repository. To publish elsewhere you will need to set up correct distribution management information. Y...
How to evaluate a math expression given in string form?
...ax.script.ScriptEngine;
import javax.script.ScriptException;
public class Test {
public static void main(String[] args) throws ScriptException {
ScriptEngineManager mgr = new ScriptEngineManager();
ScriptEngine engine = mgr.getEngineByName("JavaScript");
String foo = "40+2";
Syste...
Using Laravel Homestead: 'no input file specified'
...Homestead.yaml -> This file contains your sites mapping (map: homestead.test to: /home/vagrant/code/public ) This means that if you go to your virtual machine to root-> /home/vagrant/code/public/ you have to have your html php files there. If there are not there, run the: composer create-proje...
offsetting an html anchor to adjust for fixed header [duplicate]
...story) {
var match, rect, anchorOffset;
if(!this.ANCHOR_REGEX.test(href)) {
return false;
}
match = document.getElementById(href.slice(1));
if(match) {
rect = match.getBoundingClientRect();
anchorOffset = window.pageYOffset + rect.top - this.g...
how to get program files x86 env variable?
...variable according to MSDN. Unfortunately I don't have 64-bit XP/Vista to test.
– Lexikos
Oct 20 '15 at 21:40
1
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Is it possible to use a div as content for Twitter's Popover
...e popover.
https://jsfiddle.net/shrewmouse/ex6tuzm2/4/
HTML:
<h1> Test </h1>
<div><button id="target">click me</button></div>
<!-- This will be the contents of our popover -->
<div class='_content' id='blah'>
<h1>Extra Stuff</h1>
<i...