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Is there any difference between the `:key => “value”` and `key: “value”` hash notations?
Is there any difference between :key => "value" (hashrocket) and key: "value" (Ruby 1.9) notations?
5 Answers
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Execute command without keeping it in history [closed]
I want to execute some commands but don't want to store them in the command history. So that nobody will be able to search it in the .bash_history file.
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When to use the brace-enclosed initializer?
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Test if object implements interface
This has probably been asked before, but a quick search only brought up the same question asked for C#. See here.
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Is 0 a decimal literal or an octal literal?
Zero is always zero, so it doesn't matter. But in a recent discussion with a friend he said that octal literals are almost unused today. † Then it dawned upon me that actually almost all integer literals in my code are octal, namely 0 .
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How to read the Stock CPU Usage data
On Ice Cream Sandwich, an option in the Developer Options is "Show CPU Usage", which adds an overlay on the screen (see screenshot below).
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Override compile flags for single files
I would like to use a global set of flags for compiling a project, meaning that at my top-level CMakeLists.txt file I have specified:
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What's in an Eclipse .classpath/.project file?
We recently had an issue with an Eclipse project for one of our team members. Tomcat was not deploying JARs of the application.
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What is the difference between JavaConverters and JavaConversions in Scala?
... scala.collection , there are two very similar objects JavaConversions and JavaConverters .
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C# Thread safe fast(est) counter
What is the way to obtain a thread safe counter in C# with best possible performance?
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