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Git in Powershell saying 'Could not find ssh-agent'
I have git installed and it works great in the command prompt, but when I open up powershell it gives me this warning:
6 An...
Mongoose indexing in production code
...dex in production. Once the index has been added, subsequent ensureIndex calls will simply see that the index already exists and then return. So it only has an effect on performance when you're first creating the index, and at that time the collections are often empty so creating an index would be...
lexers vs parsers
Are lexers and parsers really that different in theory?
5 Answers
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Why does “split” on an empty string return a non-empty array?
...ngleton array containing just the input string is returned,
Second, remove all the rightmost empty strings. This is the reason ",,,".split(",") returns empty array.
According to this, the result of "".split(",") should be an empty array because of the second step, right?
It should. Unfortunately,...
Change multiple files
...ot even just a builtin. For sed -i 's/old/new' *, the expansion of * must ALL be passed as an arglist to sed, and I'm fairly sure this has to happen before the sed process can even be started. Using the for loop, the full arglist (the expansion of *) never gets passed as a command, only stored in ...
node.js shell command execution
... you are expecting synchronous behavior while using stdout asynchronously. All of the calls in your run_cmd function are asynchronous, so it will spawn the child process and return immediately regardless of whether some, all, or none of the data has been read off of stdout. As such, when you run
co...
Building a minimal plugin architecture in Python
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Mine is, basically, a directory called "plugins" which the main app can poll and then use imp.load_module to pick up files, look for a well-known entry point possibly with module-level config params, and go from there. I use file-monitorin...
What's the shortest code to cause a stack overflow? [closed]
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All these answers and no Befunge? I'd wager a fair amount it's shortest solution of them all:
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Not kidding. Try it yourself: http://www.quirkster.com/iano/js/befunge.html
EDIT: I guess I need to explain this one. The 1 o...
How to free memory in Java?
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Java uses managed memory, so the only way you can allocate memory is by using the new operator, and the only way you can deallocate memory is by relying on the garbage collector.
This memory management whitepaper (PDF) may help explain what's going on.
You can also call Sy...
How to avoid isset() and empty()
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For those interested, I have expanded this topic into a small article, which provides the below information in a somewhat better structured form: The Definitive Guide To PHP's isset And empty
IMHO you should think about not just making the app "E_NOTICE compatible", but restructu...