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Why is it slower to iterate over a small string than a small list?
... 1 (1 positional, 0 keyword pair)
#>>> 25 POP_TOP
#>>> 26 LOAD_CONST 0 (None)
#>>> 29 RETURN_VALUE
def string_iterate():
[item for item in "abc"]
dis.dis(string_iterate)
#>>> 21 0 LOAD_CO...
How can I break an outer loop with PHP?
...
foreach (...)
{
if (i.name == j)
goto top;
}
}
top:
But goto must be used carefully. Goto is evil (considered bad practice)
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How would you implement an LRU cache in Java?
...ove it before adding to queue
Frequently used keys will be at the top so the search could be fast.
*/
if ( oldValue != null ) {
queue.removeFirstOccurrence ( key );
}
queue.addFirst ( key );
if ( map.size () > limit ) {
fi...
Xcode 4, Core Data Model Version - Set Current Version
...
Click on the top level .xcdatamodelId file (the one that has the many versions of .xcdatamodel under it as children).
Make sure the Utilities sidepane is visible (if not click on the third "View" button at the top right of the window).
In...
Check if a user has scrolled to the bottom
...on window, like this:
$(window).scroll(function() {
if($(window).scrollTop() + $(window).height() == $(document).height()) {
alert("bottom!");
}
});
You can test it here, this takes the top scroll of the window, so how much it's scrolled down, adds the height of the visible window an...
Remove files from Git commit
...o, it was posted months earlier). Secondly, accepted answers are always on top regardless of the number of up votes.
– MITjanitor
Aug 13 '13 at 21:30
4
...
What's the difference between using “let” and “var”?
...foo); // Foo
}
checkHoisting();
Creating global object property
At the top level, let, unlike var, does not create a property on the global object:
var foo = "Foo"; // globally scoped
let bar = "Bar"; // globally scoped
console.log(window.foo); // Foo
console.log(window.bar); // undefined
R...
How do I activate C++ 11 in CMake?
... you will always have CMake 3.1 available, you can just write this in your top-level CMakeLists.txt file, or put it right before any new target is defined:
set (CMAKE_CXX_STANDARD 11)
If you need to support older versions of CMake, here is a macro I came up with that you can use:
macro(use_cxx11...
Using HTML5/Canvas/JavaScript to take in-browser screenshots
...Your web app can now take a 'native' screenshot of the client's entire desktop using getUserMedia():
Have a look at this example:
https://www.webrtc-experiment.com/Pluginfree-Screen-Sharing/
The client will have to be using chrome (for now) and will need to enable screen capture support under ch...
Is there a way to change the spacing between legend items in ggplot2?
... = "Dark2") +
theme_minimal(base_size = 14) +
theme(legend.position = 'top',
legend.spacing.x = unit(1.0, 'cm'))
Note: If you only want to expand the spacing to the right of the legend text, use stringr::str_pad()
Example: Move the legend key labels to the bottom and increase verti...