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Is there a performance difference between i++ and ++i in C?
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Executive summary: No.
i++ could potentially be slower than ++i, since the old value of i
might need to be saved for later use, but in practice all modern
compilers will optimize this away.
We can demonstrate this by looking at the code for this function,
both wit...
How do I make an attributed string using Swift?
...sing to display the amount. The numbers in the UILabel are changing dynamically with user input just fine, but I need to add a lower case "g" on the end of the string that is formatted differently from the updating numbers. The "g" needs to be attached to the numbers so that as the number size and ...
Check if a dialog is displayed with Espresso
..., based on text with id
onView(withId(R.id.myDialogTextId)).check(matches(allOf(withText(myDialogText), isDisplayed()));
To click on dialogs button do this (button1 - OK, button2 - Cancel):
onView(withId(android.R.id.button1)).perform(click());
UPDATE
I think is possible since Espresso has mult...
git selective revert local changes from a file
...be I am taking commits too seriously. Maybe I should relax now since it is all in a local repo. btw what does git reset --soft HEAD^ do?
– Pradeep
Jul 10 '09 at 12:42
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Trigger change event of dropdown
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I don't know that much JQuery but I've heard it allows to fire native events with this syntax.
$(document).ready(function(){
$('#countrylist').change(function(e){
// Your event handler
});
// And now fire change event when the DOM is ready
$('#cou...
How is Pythons glob.glob ordered?
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It is probably not sorted at all and uses the order at which entries appear in the filesystem, i.e. the one you get when using ls -U. (At least on my machine this produces the same order as listing glob matches).
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Why is C so fast, and why aren't other languages as fast or faster? [closed]
...eaving the former assertion for another post, what is special about C that allows it to be faster than other languages? Or put another way: what's to stop other languages from being able to compile down to binary that runs every bit as fast as C?
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MySQL - Make an existing Field Unique
...e you don't have duplicates first, no?
– William T. Mallard
Apr 16 '14 at 20:04
1
Be sure to make...
Adding a column to a data.frame
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@RomanLuštrik, This solution can be rewritten really nicely in a single line. Using your your.df data, you can simply do your.df$group = cumsum(your.df[, 1]==1) to get your new group column.
– A5C1D2H2I1M1N2O1R2T1
Apr 16 '12 at 17:47
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How does one get started with procedural generation?
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Procedural content generation is now all written for the GPU, so you'll need to know a shader language. That means GLSL or HLSL. These are languages tied to OpenGL and DirectX respectively.
While my personal preference is for Dx11 / HLSL due to speed, an easi...