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How do you get a directory listing sorted by creation date in python?
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This worked perfectly. I'm trying to compare two directories cdate with each other. Is there a way to compare the seconds between the two cdates?
– Federer
Jan 26 '12 at 15:25
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How can I loop through a C++ map of maps?
...rlier versions, and avoids unnecessary copies.
Some favour replacing the comments with explicit definitions of reference variables (which get optimised away if unused):
for(auto const &ent1 : mymap) {
auto const &outer_key = ent1.first;
auto const &inner_map = ent1.second;
for(a...
Best way to initialize (empty) array in PHP
...is part of the array literal grammar. Both are optimized and executed in completely different ways, with the literal grammar not being dogged by the overhead of calling a function.
PHP, on the other hand, has language constructs that may look like functions but aren't treated as such. Even with...
How to count the number of occurrences of an element in a List
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I'm pretty sure the static frequency-method in Collections would come in handy here:
int occurrences = Collections.frequency(animals, "bat");
That's how I'd do it anyway. I'm pretty sure this is jdk 1.6 straight up.
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Android studio add external project to build.gradle
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Check if two unordered lists are equal [duplicate]
...of (hashable) things, called a set. If you convert both lists to sets, the comparison will be unordered.
set(x) == set(y)
Documentation on set
EDIT: @mdwhatcott points out that you want to check for duplicates. set ignores these, so you need a similar data structure that also keeps track of th...
Placement of the asterisk in pointer declarations
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Whitespace is insignificant to a C compiler (ignoring the preprocessor). So no matter how many spaces there are or aren't between the asterisk and its surroundings, it has exactly the same meaning.
– ephemient
Oct 7 '08 ...
How to define custom configuration variables in rails
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Update 1
Very recommended: I'm going with Rails Config gem nowadays for the fine grained control it provides.
Update2
If you want a quick solution, then check Jack Pratt's answer below.
Although my original answer below still works, this ...
How do I upgrade my ruby 1.9.2-p0 to the latest patch level using rvm?
...tall the new ruby version, just run rvm install 1.9.2 - and wait for it to compile!
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How do I concatenate const/literal strings in C?
... *strcat(char *dest, const char *src);
Here is an example from cplusplus.com:
char str[80];
strcpy(str, "these ");
strcat(str, "strings ");
strcat(str, "are ");
strcat(str, "concatenated.");
For the first parameter, you need to provide the destination buffer itself. The destination buffer must...