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Difference between abstraction and encapsulation?
...s would require such complex program code that they would fail from the outset. Without abstraction, you couldn’t even write a program to print a number: the concept “print” involves countless abstractions (what’s a screen? what’s a character? what’s a pixel? …)
–...
How to use a switch case 'or' in PHP
... for a value, and run different pieces of code depending on which value is set.
Each possible option is given by a case in the switch statement.
Example :
switch($bar)
{
case 4:
echo "This is not the number you're looking for.\n";
$foo = 92;
}
(ii). Delimiting code blocks
T...
Step-by-step debugging with IPython
...
What about ipdb.set_trace() ? In your code :
import ipdb; ipdb.set_trace()
update: now in Python 3.7, we can write breakpoint(). It works the same, but it also obeys to the PYTHONBREAKPOINT environment variable. This feature comes from thi...
How can I find script's directory with Python? [duplicate]
...'import os; print os.path.dirname(os.path.realpath(__file__))', which is a set of commands run by a python interpreter.
– Ehtesh Choudhury
Jan 5 '15 at 19:50
...
How to use Session attributes in Spring-mvc
...equest request){
ShoppingCart cart = (ShoppingCart)request.getSession().setAttribute("cart",value);
return "testJsp";
}
and you can get it from controller like this :
ShoppingCart cart = (ShoppingCart)session.getAttribute("cart");
Make your controller session scoped
@Controller
@Scope("se...
Concatenating two std::vectors
...d only add code to first get the number of elements each vector holds, and set vector1 to be the one holding the greatest. Should you do otherwise you're doing a lot of unnecessary copying.
– Joe Pineda
Oct 14 '08 at 16:11
...
Rename a git submodule
...ubmodule's work tree in that of the superproject. But the submodule's path setting in .gitmodules is left untouched, which is now inconsistent with the work tree and makes git commands that rely on the proper path -> name mapping (like status and diff) behave strangely.
Let "git mv" help her...
How to capture the “virtual keyboard show/hide” event in Android?
...
2020 Update
This is now possible:
On Android 11, you can do
view.setWindowInsetsAnimationCallback(object : WindowInsetsAnimation.Callback {
override fun onEnd(animation: WindowInsetsAnimation) {
super.onEnd(animation)
val showingKeyboard = view.rootWindowInsets.isVisibl...
Padding characters in printf
...
Pure Bash. Use the length of the value of 'PROC_NAME' as offset for the fixed string 'line':
line='----------------------------------------'
PROC_NAME='abc'
printf "%s %s [UP]\n" $PROC_NAME "${line:${#PROC_NAME}}"
PROC_NAME='abcdef'
printf "%s %s [UP]\n" $PROC_NAME "${line:${#PROC_N...
How to remove an element from an array in Swift
How can I unset/remove an element from an array in Apple's new language Swift?
18 Answers
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