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How to list files in a directory in a C program?

...le for POSIX compliant systems : /* * This program displays the names of all files in the current directory. */ #include <dirent.h> #include <stdio.h> int main(void) { DIR *d; struct dirent *dir; d = opendir("."); if (d) { while ((dir = readdir(d)) != NULL) { pri...
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Understanding recursion [closed]

...A binary tree is a tree made of nodes that have exactly two children, typically called "left" and "right"; again the children can be nodes, or null. A root is a node that is not the child of any other node. Imagine that a node, in addition to its children, has a value, a number, and imagine that we...
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Ways to iterate over a list in Java

...ng somewhat new to the Java language I'm trying to familiarize myself with all the ways (or at least the non-pathological ones) that one might iterate through a list (or perhaps other collections) and the advantages or disadvantages of each. ...
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How to check if a string “StartsWith” another string?

...pt 6's String.prototype.startsWith() method, but it's not yet supported in all browsers. You'll want to use a shim/polyfill to add it on browsers that don't support it. Creating an implementation that complies with all the details laid out in the spec is a little complicated. If you want a faithful ...
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Conditional Variable vs Semaphore

... that a piece of code is atomic, put a lock around it. You could theoretically use a binary semaphore to do this, but that's a special case. Semaphores and condition variables build on top of the mutual exclusion provide by locks and are used for providing synchronized access to shared resources. ...
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Shell equality operators (=, ==, -eq)

...nd many other shells) adopted. That's the whole point -- if you have [[ at all, then you can safely assume that all the extensions ksh implemented around it (fnmatch()-style pattern matching, ERE regular expressions with =~, and yes, suppression of string-splitting and filesystem globbing) will be a...
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Deleting all files in a directory with Python

I want to delete all files with the extension .bak in a directory. How can I do that in Python? 7 Answers ...
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Right to Left support for Twitter Bootstrap 3

... in every version of bootstrap,you can do it manually set rtl direction to your body in bootstrap.css file, look for ".col-sm-9{float:left}" expression,change it to float:right this do most things that you want for rtl ...
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Select all DIV text with single mouse click

...e contents of a DIV tag when the user clicks on the DIV...the idea is that all of the text is highlighted/selected so the user doesn't need to manually highlight the text with the mouse and potentially miss a bit of the text? ...
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Select rows of a matrix that meet a condition

... How does this work if you don't want to specify the column names at all but want to work over all columns in the matrix? – user5359531 Jul 22 '16 at 22:54 ...