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Escaping a forward slash in a regular expression
My question is a simple one, and it is about regular expression escaping. Do you have to escape a forward slash / in a regular expression? And how would you go about doing it?
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Rails 3 migrations: Adding reference column?
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EDIT: This is an outdated answer and should not be applied for Rails 4.x+
You don't need to add references when you can use an integer id to your referenced class.
I'd say the advantage of using references instead of a plain integer is that the model will ...
set up device for development (???????????? no permissions)
I am using a Samsung galaxy nexus phone ( Android 4.0 platform) .
26 Answers
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Plotting with seaborn using the matplotlib object-oriented interface
...wo classes
"Axes-level" functions, including regplot, boxplot, kdeplot, and many others
"Figure-level" functions, including lmplot, factorplot, jointplot and one or two others
The first group is identified by taking an explicit ax argument and returning an Axes object. As this suggests, you can...
“Default Activity Not Found” on Android Studio upgrade
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If you see that error occur after upgrading versions of IntelliJ IDEA or Android Studio, or after Generating a new APK, you may need to refresh the IDE's cache.
File -> Invalidate Caches / Restart...
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iTerm2: How to expand split pane temporarily?
Is there a way to temporarily expand a split pane into full tab and go back again when done?
I am looking for a keyboard shortcut to do so. The use case is to be able to temporarily switch to full-screen on demand.
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Under what conditions is a JSESSIONID created?
...ll return you a session or null. In this case, new session is not created, and JSESSIONID cookie is not sent. (This also means that session isn't necessarily created on first request... you and your code are in control when the session is created)
Sessions are per-context:
SRV.7.3 Session Scope...
Cancel/kill window.setTimeout() before it happens
..., for example. I have a few of these that hang out for 10 seconds or more and if the user gets clicking around the action can occur at incorrect time intervals.
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How do I make a placeholder for a 'select' box?
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I usually add both disabled and selected. Seems to work in FF too.
– nilskp
May 21 '12 at 18:05
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Simulate airplane mode in iPhone Simulator
... emulate the iPhone; it's just an environment for Mac apps to link against and look like an iPhone. So you need a way, at the system layer, to restrict an app from talking to the network. Unix doesn't provide that; it would almost certainly need kernel support to get it. You could do it more easily ...