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What is the purpose of a question mark after a type (for example: int? myVariable)?
Typically the main use of the question mark is for the conditional, x ? "yes" : "no" .
8 Answers
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Why doesn't this code simply print letters A to Z?
This snippet gives the following output (newlines are replaced by spaces):
13 Answers
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How do I replace whitespaces with underscore?
I want to replace whitespace with underscore in a string to create nice URLs. So that for example:
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How to verify an XPath expression in Chrome Developers tool or Firefox's Firebug?
How can I verify my XPath?
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Read first N lines of a file in python
We have a large raw data file that we would like to trim to a specified size.
I am experienced in .net c#, however would like to do this in python to simplify things and out of interest.
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Change Name of Import in Java, or import two classes with the same name
In Python you can do a:
7 Answers
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Rails and PostgreSQL: Role postgres does not exist
I have installed PostgreSQL on my Mac OS Lion, and am working on a rails app. I use RVM to keep everything separate from my other Rails apps.
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git rebase, keeping track of 'local' and 'remote'
...eUploader: {
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What's the simplest way to print a Java array?
In Java, arrays don't override toString() , so if you try to print one directly, you get the className + '@' + the hex of the hashCode of the array, as defined by Object.toString() :
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Linux command: How to 'find' only text files?
After a few searches from Google, what I come up with is:
16 Answers
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