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In Bash, how can I check if a string begins with some value?

... So is there a functional difference between [[ $a == z* ]] and [[ $a == "z*" ]]? In other words: do they work differently? And what specifically do you mean when you say "$a is equal to z*"? – Niels Bom Jun 16 '15 at 10:37 ...
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Why is my program slow when looping over exactly 8192 elements?

...rom the program in question. The matrix img[][] has the size SIZE×SIZE, and is initialized at: 2 Answers ...
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How to prompt for user input and read command-line arguments [closed]

How do I have a Python script that a) can accept user input and how do I make it b) read in arguments if run from the command line? ...
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What is the fundamental difference between WebSockets and pure TCP?

I've read about WebSockets and I wonder why browser couldn't simply open trivial TCP connection and communicate with server like any other desktop application. And why this communication is possible via websockets? ...
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Custom Compiler Warnings

... compiler warnings telling you that the object/method/property is obsolete and somthing else should be used. I'm currently working on a project that requires a lot of refactoring an ex-employees code. I want to write a custom attribute that I can use to mark methods or properties that will generate ...
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How can I negate the return-value of a process?

...at negates the value a process returns. It should map 0 to some value != 0 and any value != 0 to 0, i.e. the following command should return "yes, nonexistingpath doesn't exist": ...
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Ruby on Rails Callback, what is difference between :before_save and :before_create?

Could you explain in detail what the :before_save and :before_create Ruby on Rails callbacks are, and what they have to do with Rails validations? Does validation occur after :before_save or :before_create ? ...
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How do I generate a random int number?

How do I generate a random integer in C#? 32 Answers 32 ...
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How to securely save username/password (local)?

...hich you need to log into first. The account details consist of username and password, and they need to be saved locally. It's just a matter of security, so other people using the same computer can't see everyone's personal data. What is the best/most secure way to save this data? ...
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Is there a combination of “LIKE” and “IN” in SQL?

...ecause Full Text Search (FTS) is the recommended alternative. Both Oracle and SQL Server FTS implementations support the CONTAINS keyword, but the syntax is still slightly different: Oracle: WHERE CONTAINS(t.something, 'bla OR foo OR batz', 1) > 0 SQL Server: WHERE CONTAINS(t.something, '"b...