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Check whether a string contains a substring
...ensitive Substring Example
This is an extension of Eugene's answer, which converts the strings to lower case before checking for the substring:
if (index(lc($str), lc($substr)) != -1) {
print "$str contains $substr\n";
}
...
Why do we need extern “C”{ #include } in C++?
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C and C++ are superficially similar, but each compiles into a very different set of code. When you include a header file with a C++ compiler, the compiler is expecting C++ code. If, however, it is a C header, then the compiler expects the data contained in the header file to be c...
Length of generator output [duplicate]
... this might be less memory consuming but it seems to be slower than simply converting it to a list.
– lumbric
May 16 '15 at 8:23
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Pointers vs. values in parameters and return values
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tl;dr:
Methods using receiver pointers are common; the rule of thumb for receivers is, "If in doubt, use a pointer."
Slices, maps, channels, strings, function values, and interface values are implemented with pointers internally, and a pointer to them is of...
Javascript Drag and drop for touch devices [closed]
...work on touch devises
or you can use this code which I am using, it also converts mouse events into touch and it works like magic.
function touchHandler(event) {
var touch = event.changedTouches[0];
var simulatedEvent = document.createEvent("MouseEvent");
simulatedEvent.initMous...
In c++ what does a tilde “~” before a function name signify?
...s method is called when the instance of your class is destroyed:
Stack<int> *stack= new Stack<int>;
//do something
delete stack; //<- destructor is called here;
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How to make MySQL handle UTF-8 properly
...set and character-set-server).
If you have existing data that you wish to convert to UTF-8, dump your database, and import it back as UTF-8 making sure:
use SET NAMES utf8 before you query/insert into the database
use DEFAULT CHARSET=utf8 when creating new tables
at this point your MySQL client a...
Combine multiple Collections into a single logical Collection?
...ow I could use guava iterables/iterators to generate a logical view on the internal collections without making temporary copies.
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Difference between reduce and foldLeft/fold in functional programming (particularly Scala and Scala
...top one level deep. We could chop up each chunk too. This is why summing integers in a list is O(log N) if given an infinite number of CPUs.
If you just look at the signatures there is no reason for reduce to exist because you can achieve everything you can with reduce with a foldLeft. The funct...
How to access object attribute given string corresponding to name of that attribute
...me df1,and a variable x = 'df1' i.e. df1 as a string in var x. i want to print the shape of df like this, getattr(x, 'shape') or getattr('df1', 'shape'). I know this cannot be done with getattr, any other methods.
– ihightower
Feb 1 at 13:50
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