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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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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 ...
“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
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Notice: Undefined variable
From the vast wisdom of the PHP Manual:
Relying on the default value of an uninitialized variable is problematic in the case of including one file into another which uses the same variable name. It is also a major securit...
Internet Explorer's CSS rules limits
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Referring the following from Microsoft:
Stylesheet Limits in Internet Explorer
KB - A webpage that uses CSS styles does not render correctly in Internet Explorer
The rules for IE9 are:
A sheet may contain up to 4095 selectors (Demo)
A sheet ma...
Android.app Fragments vs. android.support.v4.app using ViewPager?
...ode, I've noticed they utilize the android.support.v4.app library, which from my research is the only way to access the ViewPager class.
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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...
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UPDATE: The original answer from 2013 is now outdated because some of the classes have been replaced.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 =...
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...
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...
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...