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regex for zip-code
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^\d{5}(?:[-\s]\d{4})?$
^ = Start of the string.
\d{5} = Match 5 digits (for condition 1, 2, 3)
(?:…) = Grouping
[-\s] = Match a space (for condition 3) or a hyphen (for condition 2)
\d{4} = Match 4 digits (for condition 2, 3)
…? = The pattern befor...
AVAudioPlayer throws breakpoint in debug mode
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The backtrace helped a lot, thanks!. We'd started running into the same issue recently. It turns out the mp3 files it was throwing on did not have a valid ID3 tag and running them through an app such as Tagr fixed them right up!
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git push says “everything up-to-date” even though I have local changes
...w this and asked you to create a temporary branch using the -b option, but starting from version 1.5.0, the above command detaches your HEAD from the current branch and directly points at the commit named by the tag (v2.6.18 in the example above).
You can use all git commands while in this stat...
Checking whether a variable is an integer or not [duplicate]
...ut the BUT part! isn't proper and clear data checking on method input(e.g. start, before beginning to do anyting with a variable) good practice in python as it should generally be in any programming? So, for example, before I give data to a database query when wanting to fetch an objetc by id, which...
SQL/mysql - Select distinct/UNIQUE but return all columns?
...e? Let us assume that you need a value with a certain characteristic, e.g. starting with the letter 'M'. Now things get complicated.
The only solution I could find so far is to put your whole query into a subquery, and to construct the additional column outside of it by hands:
SELECT
countryl...
Creating an empty file in Ruby: “touch” equivalent?
...o any variable? I'm creating the file so other processes on the system can start working with it immediately, and they will be blocked if the file handle is still open for writing.
– Abhi Beckert
Nov 11 '11 at 22:49
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github markdown colspan
...t doesn't work on the live preview site you provide.
A simple test that I started with was:
| Header ||
|--------------|
| 0 | 1 |
using the command:
multimarkdown -t html test.md > test.html
share
|
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扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...event-driven programming tool that allows everyone, especially novices, to start programming and building fully functional apps for Android devices. Compared to traditional text programming with Android Studio, it has limited features. We enabled App Inventor with multi-touch gestures detection, suc...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...event-driven programming tool that allows everyone, especially novices, to start programming and building fully functional apps for Android devices. Compared to traditional text programming with Android Studio, it has limited features. We enabled App Inventor with multi-touch gestures detection, suc...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...event-driven programming tool that allows everyone, especially novices, to start programming and building fully functional apps for Android devices. Compared to traditional text programming with Android Studio, it has limited features. We enabled App Inventor with multi-touch gestures detection, suc...