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How can I find out if I have Xcode commandline tools installed?

...ow you get it from the store, and with this new mechanism it can't install extra things outside of the Xcode.app, so you have to manually do it yourself, by: xcode-select --install On Xcode 4.x you can check to see if they are installed from within the Xcode UI: On Xcode 5.x it is now here: ...
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Batch File; List files in directory, only filenames?

...s is probably a very simple question, but I'm having trouble with it. Basically, I am trying to write a Batch File and I need it to list all the files in a certain directory. The dir command will do this, but it also gives a bunch of other information; I want it to list ONLY the file names and e...
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Markdown and including multiple files

Is there any markdown fork that allows you to reference other files, something like an includes file? Specifically, I want to create a separate markdown file with links that I call often but not always (call this B.md), then when I link by reference in the md file I'm writing (A.md), I'd like it to ...
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How to destroy an object?

...hich case you can't use unlink() because unlink() will require a path name string but in this case $MyConnection is an Object. So you have another choice of setting its value to null: $MyConnection = null; now things go right, as you have expected. You don't have any content inside the variable $...
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Visual Studio Post Build Event - Copy to Relative Directory Location

... comment: copy /Y "$(TargetPath)" "$(SolutionDir)somewhere\" , without the extra backslash, since $(SolutionDir) includes a trailing backslash (at least in VS2012) – icy Sep 12 '14 at 14:19 ...
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What is the overhead of creating a new HttpClient per call in a WebAPI client?

...ndler = new HttpClientHandler(); //never dispose this HttpClient GetClient(string token) { //client code can dispose these HttpClient instances return new HttpClient(_sharedHandler, disposeHandler: false) { DefaultRequestHeaders = { Authorization = new...
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Most efficient way to reverse a numpy array

... perfplot requires at least Python 3.6 because it uses f-strings (Literal String Interpolation) – fivef May 13 at 8:52 add a comment  |  ...
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How to terminate a Python script

...ed by raising the SystemExit exception, so cleanup actions specified by finally clauses of try statements are honored, and it is possible to intercept the exit attempt at an outer level. The optional argument arg can be an integer giving the exit status (defaulting to zero), or another type of obj...
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Java - get pixel array from image

...ageio.ImageIO; public class PerformanceTest { public static void main(String[] args) throws IOException { BufferedImage hugeImage = ImageIO.read(PerformanceTest.class.getResource("12000X12000.jpg")); System.out.println("Testing convertTo2DUsingGetRGB:"); for (int i = 0; i &l...
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How can I find the data structure that represents mine layout of Minesweeper in memory?

...n. I've found this MSDN article on a simple WinDbg command that reveals all the mines but it is old, is not explained in any detail and really isn't what I'm looking for. ...