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What does yield mean in PHP?
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What is yield?
The yield keyword returns data from a generator function:
The heart of a generator function is the yield keyword. In its simplest form, a yield statement looks much like a return statement, except that instead of stopping execution of the function and ...
When to choose mouseover() and hover() function?
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From the official jQuery documentation
.mouseover()
Bind an event handler to the "mouseover" JavaScript event, or trigger
that event on an element.
.hover() Bind one or two handlers
to the matched elements, to be exe...
What happened to console.log in IE8?
...onsole.log like this... you won't see anymore where your logging is coming from. I find that very useful sometimes on top of which is just looks wrong to have every console line originating from the exact same location in your code.
– Martin Westin
Aug 31 '11 a...
Calculating days between two dates with Java
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UPDATE: The original answer from 2013 is now outdated because some of the classes have been replaced. The new way of doing this is using the new java.time classes.
DateTimeFormatter dtf = DateTimeFormatter.ofPattern("dd MM yyyy");
String inputString1 =...
Parallelize Bash script with maximum number of processes
...-w )
find . -name \*.pdf | xargs --max-args=1 --max-procs=$cpus pdf2ps
From the docs:
--max-procs=max-procs
-P max-procs
Run up to max-procs processes at a time; the default is 1.
If max-procs is 0, xargs will run as many processes as possible at a
time. Use the -n opti...
What's the standard way to work with dates and times in Scala? Should I use Java types or there are
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From Java SE 8 onwards, users are asked to migrate to java.time (JSR-310). There are efforts on creating scala libraries wrapping java.time for scala such as scala-time. If targeting lower than SE 8 use one of the below. Als...
How to easily map c++ enums to strings
...:key_type const&, typename T::value_type const&). (Returning *this from operator() allows the chaining of operator(), like operator<< on std::ostreams)
template<typename T> struct map_init_helper
{
T& data;
map_init_helper(T& d) : data(d) {}
map_init_helper&a...
Reading from text file until EOF repeats last line [duplicate]
The following C++ code uses a ifstream object to read integers from a text file (which has one number per line) until it hits EOF . Why does it read the integer on the last line twice? How to fix this?
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Configuring Log4j Loggers Programmatically
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Logger.getLogger("com.fizz").addAppender(newAppender)
then logging from fizz will be handled by alle the appenders from the root logger and the newAppender.
You don't create Loggers with the configuration, you just provide handlers for all possible categories in your system.
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Scala downwards or decreasing for loop?
... until that you can use in place of to to exclude the right-hand end-point from the range. The left-hand endpoint is always included.
– Randall Schulz
Apr 13 '10 at 14:26
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