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Remove duplicate elements from array in Ruby
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array = array.uniq
uniq removes all duplicate elements and retains all unique elements in the array.
This is one of many beauties of the Ruby language.
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How to use a switch case 'or' in PHP
...ase 2:
echo "the value is either 1 or 2.";
break;
}
This is called "falling through" the case block. The term exists in most languages implementing a switch statement.
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App Inventor 2 模拟器不能正常朗读文本的解决方法 · App Inventor 2 中文网
...e TTS 引擎）。如果需要朗读文本，可以按照以下步骤解决问题：
1. 安装语音引擎
Google TTS 引擎：
在模拟器内打开应用商店（如 Google Play Store 或其他 APK 下载平台）。
搜索并安装 Google Text-to-...
PHP expresses two different strings to be the same [duplicate]
...and 272E-3063 will both be float(0) because they are too small.
For == in php,
If you compare a number with a string or the comparison involves
numerical strings, then each string is converted to a number and the
comparison performed numerically.
http://php.net/manual/en/language.operato...
PDOException SQLSTATE[HY000] [2002] No such file or directory
...fortrabbit, but as soon as I connect to SSH to run some commands (such as php artisan migrate or php artisan db:seed ) I get an error message:
...
JavaScript pattern for multiple constructors
...mber and types of parameters you pass to it, you'll have to sniff them manually. JavaScript will happily call a function with more or fewer than the declared number of arguments.
function foo(a, b) {
if (b===undefined) // parameter was omitted in call
b= 'some default value';
if (t...
How to get name of calling function/method in PHP? [duplicate]
...ow users like You :} stackoverflow.com/questions/190421/caller-function-in-php-5/… Now seriously, thanks!
– Dawid Ohia
Jan 21 '10 at 18:44
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Use dynamic variable names in JavaScript
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Since ECMA-/Javascript is all about Objects and Contexts (which, are also somekind of Object), every variable is stored in a such called Variable- (or in case of a Function, Activation Object).
So if you create variables like this:
var a = 1,
b ...
Detail change after Git pull
...ction of the git-rev-parse man page), so that you can do things like
See all of the changes: git diff master@{1} master
See the changes to a given file: git diff master@{1} master <file>
See all the changes within a given directory: git diff master@{1} master <dir>
See the summary of c...
How to parse JSON data with jQuery / JavaScript?
I have a AJAX call that returns some JSON like this:
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