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String comparison in Python: is vs. == [duplicate]
I noticed a Python script I was writing was acting squirrelly, and traced it to an infinite loop, where the loop condition was while line is not '' . Running through it in the debugger, it turned out that line was in fact '' . When I changed it to !='' rather than is not '' , it worked fine.
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How can I use grep to find a word inside a folder?
In Windows, I would have done a search for finding a word inside a folder. Similarly, I want to know if a specific word occurs inside a directory containing many sub-directories and files. My searches for grep syntax shows I must specify the filename, i.e. grep string filename .
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How do cache lines work?
I understand that the processor brings data into the cache via cache lines, which - for instance, on my Atom processor - brings in about 64 bytes at a time, whatever the size of the actual data being read.
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Where does System.Diagnostics.Debug.Write output appear?
The following C# program (built with csc hello.cs ) prints just Hello via Console! on the console and Hello via OutputDebugString in the DebugView window. However, I cannot see either of the System.Diagnostics.* calls. Why is that?
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Lightweight Javascript DB for use in Node.js [closed]
Anybody know of a lightweight yet durable database, written in Javascript, that can be used with Node.js.
11 Answers
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Are negative array indexes allowed in C?
I was just reading some code and found that the person was using arr[-2] to access the 2nd element before the arr , like so:
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Practical uses for the “internal” keyword in C#
Could you please explain what the practical usage is for the internal keyword in C#?
22 Answers
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String comparison in bash. [[: not found
I am trying to compare strings in bash. I already found an answer on how to do it on stackoverflow . In script I am trying, I am using the code submitted by Adam in the mentioned question:
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Purpose of returning by const value? [duplicate]
What is the purpose of the const in this?
4 Answers
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Is a colon `:` safe for friendly-URL use?
We are designing a URL system that will specify application sections as words separated by slashes. Specifically, this is in GWT, so the relevant parts of the URL will be in the hash (which will be interpreted by a controller layer on the client-side):
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