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Use dynamic (variable) string as regex pattern in JavaScript
...g as regex:
Not every string is a valid regex, though: there are some speciall characters, like ( or [. To work around this issue, simply escape the string before turning it into a regex. A utility function for that goes in the sample below:
function escapeRegExp(stringToGoIntoTheRegex) {
return...
Why '&&' and not '&'?
...luation of the rest (op.CanExecute()) is skipped.
Apart from this, technically, they are different, too:
&& and || can only be used on bool whereas & and | can be used on any integral type (bool, int, long, sbyte, ...), because they are bitwise operators. & is the bitwise AND operat...
Is there a vr (vertical rule) in html?
... rule.
It does not make logical sense to have one. HTML is parsed sequentially, meaning you lay out your HTML code from top to bottom, left to right how you want it to appear from top to bottom, left to right (generally)
A vr tag does not follow that paradigm.
This is easy to do using CSS, howeve...
How to obtain Signing certificate fingerprint (SHA1) for OAuth 2.0 on Android?
...p following the steps in https://developers.google.com/console/help/#installed_applications which leads me to follow
http://developer.android.com/tools/publishing/app-signing.html .
...
String comparison using '==' vs. 'strcmp()'
...
@onur güngör Actually, this does answers the op's question, which is So is there any reason to use strcmp() ?, while Postfuturist's answer doesn't. Oh, hell... no one answer seemed to compile at once the use of strcmp(), the performance of =...
How do I revert an SVN commit?
...en 1946 (good commit). Now i want to remove only 1944(bad commit) and keep all revision after 1944, means i want a result like 1943,1945,1946(remove only 1944) from all these revision, what should i do ??
– Bhavin_m
Nov 1 '18 at 12:49
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C# loop - break vs. continue
...
A really easy way to understand this is to place the word "loop" after each of the keywords. The terms now make sense if they are just read like everyday phrases.
break loop - looping is broken and stops.
continue loop - loop ...
What does send() do in Ruby?
... some method reacts (because its name matches the first argument).
Practically speaking, those lines are equivalent:
1.send '+', 2
1.+(2)
1 + 2
Note that send bypasses visibility checks, so that you can call private methods, too (useful for unit testing).
If there is really no variable before...
org.xml.sax.SAXParseException: Content is not allowed in prolog
...nother thing that often happens is a UTF-8 BOM (byte order mark), which is allowed before the XML declaration can be treated as whitespace if the document is handed as a stream of characters to an XML parser rather than as a stream of bytes.
The same can happen if schema files (.xsd) are used to va...
Is there any way to see the file system on the iOS simulator?
...e:
~/Library/Application Support/iPhone Simulator
It had directories for all models of simulators (4.0, 4.1, 5.0, etc) you have ever run, go to the one you are running from in Xcode.
Once in a folder, go to Applications, choose the Finder option that shows date for files, and sort by date. Your ...