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Generate random string/characters in JavaScript
I want a 5 character string composed of characters picked randomly from the set [a-zA-Z0-9] .
77 Answers
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Execution time of C program
I have a C program that aims to be run in parallel on several processors. I need to be able to record the execution time (which could be anywhere from 1 second to several minutes). I have searched for answers, but they all seem to suggest using the clock() function, which then involves calculating...
Writing a dict to txt file and reading it back?
I am trying to write a dictionary to a txt file. Then read the dict values by typing the keys with raw_input . I feel like I am just missing one step but I have been looking for a while now.
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What is the use of the pipe symbol in YAML?
I am new to yaml, and I have a question about the pipe symbol (|) used for multiple lines. Does YAML have any syntax like the one below?
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MySQL remove all whitespaces from the entire column
Is there a way to remove all whitespaces from a specific column for all values?
5 Answers
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Undefined reference to static constexpr char[]
I want to have a static const char array in my class. GCC complained and told me I should use constexpr , although now it's telling me it's an undefined reference. If I make the array a non-member then it compiles. What is going on?
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How do I use sudo to redirect output to a location I don't have permission to write to?
I've been given sudo access on one of our development RedHat linux boxes, and I seem to find myself quite often needing to redirect output to a location I don't normally have write access to.
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Cannot ping AWS EC2 instance
I have an EC2 instance running in AWS. When I try to ping from my local box it is not available.
25 Answers
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Why does printf not flush after the call unless a newline is in the format string?
Why does printf not flush after the call unless a newline is in the format string? Is this POSIX behavior? How might I have printf immediately flush every time?
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Re-sign IPA (iPhone)
I currently build all my applications with hudson using xcodebuild followed by a xcrun without any problems
11 Answers
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