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Regular expressions in an Objective-C Cocoa application

...ar expressions for substring searches, e.g. [myString rangeOfString:@"regex_here" options:NSRegularExpressionSearch] – Nestor Apr 28 '11 at 15:23 1 ...
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Where is the Keytool application?

...achine, you would normally find the jdk at C:\Program Files\Java\jdk1.8.0_121\bin It is used for managing keys and certificates you can sign things with, in your case, probably a jar file. If you provide more details of what you need to do, we could probably give you a more specific answer. ...
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Programmatically scroll a UIScrollView

... to the right or left depending on the direction of the finger flick. Basically my code works in a way similar to the iPhone photo app. Now, is there a way that I can programmatically do the same thing so that I end up with a slideshow that runs on its own with a click of a button and a configurabl...
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GoogleTest: How to skip a test?

...o). I then removed my comment, figuring it's obsolete... but that's some really good info! +1 – Kiril Aug 26 '11 at 17:05 ...
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ImportError: no module named win32api

...m using Python 2.7 and I want to use pywin32-214 on Windows 7 . I installed pywin32-214 by using the msi installer. But when I import win32api in my Python script, it throws the error: ...
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Regex to Match Symbols: !$%^&*()_+|~-=`{}[]:";'?,./

... The regular expression for this is really simple. Just use a character class. The hyphen is a special character in character classes, so it needs to be first: /[-!$%^&*()_+|~=`{}\[\]:";'<>?,.\/]/ You also need to escape the other regular expressio...
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Is there a performance difference between a for loop and a for-each loop?

... iterator or index variable completely. The resulting idiom applies equally to collections and arrays: // The preferred idiom for iterating over collections and arrays for (Element e : elements) { doSomething(e); } When you see the colon (:), read it as “in.” Thus, the loop ab...
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Placeholder in UITextView

... I made a few minor modifications to bcd's solution to allow for initialization from a Xib file, text wrapping, and to maintain background color. Hopefully it will save others the trouble. UIPlaceHolderTextView.h: #import <Foundation/Foundation.h> IB_DESIGNABLE @interfac...
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Finding all possible combinations of numbers to reach a given sum

How would you go about testing all possible combinations of additions from a given set N of numbers so they add up to a given final number? ...
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How to len(generator()) [duplicate]

... Generators have no length, they aren't collections after all. Generators are functions with a internal state (and fancy syntax). You can repeatedly call them to get a sequence of values, so you can use them in loop. But they don't contain any elements, so asking for the length of ...