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In Maven 2, how do I know from which dependency comes a transitive dependency?
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This didn't work for me; all I got was errors about unsupported 'legacy' values. Running @David Crow's version (i.e. without the velocity flag) worked fine though.
– Vlad Schnakovszki
Feb 28 '17 at 13:51...
jQuery empty() vs remove()
...explains it very well. It also contains examples:
.remove()
.empty()
before:
<div class="container">
<div class="hello">Hello</div>
<div class="goodbye">Goodbye</div>
</div>
.remove():
$('.hello').remove();
after:
<div class="container">
<...
getenv() vs. $_ENV in PHP
...tion about getenv, they are exactly the same, except that getenv will look for the variable in a case-insensitive manner. Most of the time it probably doesn't matter, but one of the comments on the documentation explains:
For example on Windows $_SERVER['Path'] is like you see, with the first ...
Why isn't vector a STL container?
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For space-optimization reasons, the C++ standard (as far back as C++98) explicitly calls out vector<bool> as a special standard container where each bool uses only one bit of space rather than one byte as a normal bool ...
How to sort an array of hashes in ruby
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@Etienne: That's a shortcut for .sort_by { |hsh| hsh.zip } and so it'll only work if .zip is defined as a method on each Hash. By default hashes don't expose their keys as methods, so I guess you've probably got something else going on there.
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How can I get the list of files in a directory using C or C++?
...nd simple tasks I do not use boost, I use dirent.h which is also available for windows:
DIR *dir;
struct dirent *ent;
if ((dir = opendir ("c:\\src\\")) != NULL) {
/* print all the files and directories within directory */
while ((ent = readdir (dir)) != NULL) {
printf ("%s\n", ent->d_nam...
How to reset a remote Git repository to remove all commits?
...tter be the only client.
$ git remote add origin <url>
$ git push --force --set-upstream origin master
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How to get position of a certain element in strings vector, to use it as an index in ints vector?
...ll.
Starting with C++11 you can use std::distance in place of subtraction for both iterators and pointers:
ptrdiff_t pos = distance(Names.begin(), find(Names.begin(), Names.end(), old_name_));
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How to remove specific element from an array using python
...hing that removes a specific element from an array. I know that I have to for loop through the array to find the element that matches the content.
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How can I determine whether a Java class is abstract by reflection
...ntiating the classes and trapping InstantiationException but that has a performance hit as some classes have heavy startup. I can't find anything obviously like isAbstract() in the Class.java docs.
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