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What's the difference between “squash” and “fixup” in Git/Git Extension?
...t rebase --interactive, then the answer is the commit message.
s, squash <commit> = use commit, but meld into previous commit
f, fixup <commit> = like "squash", but discard this commit's log message
For example:
pick 22a4667 father commit message
squash 46d7c0d child commit message # ...
Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_
...the registers to the variables.
In your case, the speeds are a direct result of what is stuck to the (false) dependency chain depending on what the register allocator decided to do.
13 GB/s has a chain: popcnt-add-popcnt-popcnt → next iteration
15 GB/s has a chain: popcnt-add-popcnt-add → nex...
PHP Regex to get youtube video ID?
...y overwrite an existing variable.
Putting everything together, we have:
<?php
$url = "http://www.youtube.com/watch?v=C4kxS1ksqtw&feature=relate";
parse_str( parse_url( $url, PHP_URL_QUERY ), $my_array_of_vars );
echo $my_array_of_vars['v'];
// Output: C4kxS1ksqtw
?>
Working exam...
How do I get a human-readable file size in bytes abbreviation using .NET?
...o(filename).Length;
int order = 0;
while (len >= 1024 && order < sizes.Length - 1) {
order++;
len = len/1024;
}
// Adjust the format string to your preferences. For example "{0:0.#}{1}" would
// show a single decimal place, and no space.
string result = String.Format("{0:0.##}...
Show and hide a View with a slide up/down animation
...e this:
view.animate().translationY(0);
You can also easily combine multiple animations. The following animation will slide a View down by its height and fade it in at the same time:
// Prepare the View for the animation
view.setVisibility(View.VISIBLE);
view.setAlpha(0.0f);
// Start the anim...
Expert R users, what's in your .Rprofile? [closed]
...SS and Emacs...
options("width"=160) # wide display with multiple monitors
options("digits.secs"=3) # show sub-second time stamps
r <- getOption("repos") # hard code the US repo for CRAN
r["CRAN"] <- "http://cran.us.r-project.org"
options(repos = r)
rm(r...
When & why to use delegates? [duplicate]
...on of a delegate is orders of magnitude faster than the reflection invoke alternative. Additionally if a function signature changes such that it no longer matches the delegate this results in a compile time error which you don't get with reflection invoke. Consider for example the scenario of an MSM...
NSPredicate: filtering objects by day of NSDate property
I have a Core Data model with an NSDate property. I want to filter the database by day. I assume the solution will involve an NSPredicate , but I'm not sure how to put it all together.
...
Differences between unique_ptr and shared_ptr [duplicate]
...ause a compile-time error. For example, this code is illegal:
unique_ptr<T> myPtr(new T); // Okay
unique_ptr<T> myOtherPtr = myPtr; // Error: Can't copy unique_ptr
However, unique_ptr can be moved using the new move semantics:
unique_ptr<T> myPtr(new T); ...
JavaFX Application Icon
...ed to use the following approach instead:
stage.getIcons().add(new Image(<yourclassname>.class.getResourceAsStream("icon.png")));
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