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Delete directories recursively in Java
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You should check out Apache's commons-io. It has a FileUtils class that will do what you want.
FileUtils.deleteDirectory(new File("directory"));
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multiple prints on the same line in Python
...E]")
The print function accepts an end parameter which defaults to "\n". Setting it to an empty string prevents it from issuing a new line at the end of the line.
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What's the difference between a continuation and a callback?
...on add(x, y, cont) {
cont.async(x + y);
}
function async() {
setTimeout.bind(null, this, 0).apply(null, arguments);
}
The second problem is usually solved using a function called call-with-current-continuation which is often abbreviated as callcc. Unfortunately callcc can't be ...
“for” vs “each” in Ruby
...require special language features.
Per Telemachus's Comment
for .. in .. sets the iterator outside the scope of the loop, so
for a in [1,2]
puts a
end
leaves a defined after the loop is finished. Where as each doesn't. Which is another reason in favor of using each, because the temp variable...
Is there still any reason to learn AWK?
I am constantly learning new tools, even old fashioned ones, because I like to use the right solution for the problem.
24 A...
Easiest way to check for an index or a key in an array?
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To check if the element is set (applies to both indexed and associative array)
[ ${array[key]+abc} ] && echo "exists"
Basically what ${array[key]+abc} does is
if array[key] is set, return abc
if array[key] is not set, return nothing
Ref...
How to state in requirements.txt a direct github source
...able” packages syntax can be used in requirements.txt to import packages from a variety of VCS (git, hg, bzr, svn):
-e git://github.com/mozilla/elasticutils.git#egg=elasticutils
Also, it is possible to point to particular commit:
-e git://github.com/mozilla/elasticutils.git@000b14389171a9f0d7d...
design a stack such that getMinimum( ) should be O(1)
...inimum ( if min = 7 and you push 5, it pushes 3 instead ( 5-|7-5| = 3) and sets min to 5; if you then pop 3 when min is 5 it sees that the popped value is less than min, so reverses the procedure to get 7 for the new min, then returns the previous min). As any value which doesn't cause a change the ...
Generate a random letter in Python
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@Dannid Doesn't random.sample() return a unique set of values from the input, which is not the same as random.choice()?
– Droppy
Apr 26 '17 at 7:07
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Copy file(s) from one project to another using post build event…VS2010
I have a solution with 3 projects in it. I need to copy a view from one project to another. I'm able to copy the created DLL via post build events like so:
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