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Test if something is not undefined in JavaScript
...defined", instead of a useful message about an "un-caught exception @ line 123 of file xyz.js". Eventually a second developer will probably comment out the console.log() statement, making it more difficult for a 3rd developer to come in and fix a bug happening deep within doSomething().
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What are the uses for Cross Join?
...wer the question, but, if it's true (and I'm not even sure of that) it's a fun bit of history.
In the early days of Oracle, one of the developers realized that he needed to duplicate every row in a table (for example, it's possible it was a table of events and he needed to change it separate "start...
Split output of command by columns using Bash?
..." "
Now, for this particular case of pid numbers (not names), there is a function called pgrep:
$ pgrep ssh
Shell functions
However, in general it is actually still possible to use shell functions in a concise manner, because there is a neat thing about the read command:
$ <command> | w...
站长投放广告绝对不做的事:Google Adsense和百度联盟广告违规分析 - 更多技...
...是非常不利的。
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JavaScript validation for empty input field
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123
<script type="text/javascript">
function validateForm() {
var a = document.f...
Python's most efficient way to choose longest string in list?
...the Python documentation itself, you can use max:
>>> mylist = ['123','123456','1234']
>>> print max(mylist, key=len)
123456
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How to remove leading zeros using C#
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This is the code you need:
string strInput = "0001234";
strInput = strInput.TrimStart('0');
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PHP expects T_PAAMAYIM_NEKUDOTAYIM?
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Functions are in English, but that error is in Hebrew. I'm not sure if any other errors are in Hebrew though.
– alex
Mar 1 '09 at 0:11
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Freeze screen in chrome debugger / DevTools panel for popover inspection?
...r
Find your popover (it will be nested in the trigger element's HTML)
Have fun modifying the CSS
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Remove file extension from a file name string
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String.LastIndexOf would work.
string fileName= "abc.123.txt";
int fileExtPos = fileName.LastIndexOf(".");
if (fileExtPos >= 0 )
fileName= fileName.Substring(0, fileExtPos);
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