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jQuery deferreds and promises - .then() vs .done()
...n't see the difference between using .then() & .done() for successful callbacks. I know Eric Hynds mentions that .done() and .success() map to the same functionality but I'm guessing so does .then() as all the callbacks are all invoked on a completion of a successful operation.
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What is aria-label and how should I use it?
...log.close()">X</button>`
Most people would be able to infer visually that this button will close the dialog. A blind person using assistive technology might just hear "X" read aloud, which doesn't mean much without the visual clues. aria-label explicitly tells them what the button will do...
UIScrollView not scrolling
...ViewDelegate> in your .h file if you wish to do things like programmatically scroll your UIScrollView.
– Albert Renshaw
Nov 11 '13 at 18:35
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fatal: The current branch master has no upstream branch
...tly push a new branch?": git push -u origin master or git push -u origin --all), you need now to resolve the authentication issue.
That depends on your url (ssh as in 'git@github.com/yourRepo, or https as in https://github.com/You/YourRepo)
For https url:
If your account is protected by the two-f...
How do I dump an object's fields to the console?
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Adding an inspect method to your class allows you to define how the class' attributes are displayed, rather than rely on default output. A lot of classes don't implement it well, but it can be really useful when debugging. Ruby will fall back to to_s if it can't f...
What does the “>” (greater-than sign) CSS selector mean?
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> is the child combinator, sometimes mistakenly called the direct descendant combinator.1
That means the selector div > p.some_class only selects paragraphs of .some_class that are nested directly inside a div, and not any paragraphs that are nested further within.
An il...
What is an .inc and why use it?
...nvention.
It does have a possible disadvantage which is that servers normally are not configured to parse .inc files as php, so if the file sits in your web root and your server is configured in the default way, a user could view your php source code in the .inc file by visiting the URL directly.
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How do you print out a stack trace to the console/log in Cocoa?
I'd like to log the call trace during certain points, like failed assertions, or uncaught exceptions.
6 Answers
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Is char signed or unsigned by default?
... is 100% equivalent to declaring it as signed int. This is always true for all compilers and architectures.
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Error: free(): invalid next size (fast):
... you have a memory error. You may be trying to free a pointer that wasn't allocated by malloc (or delete an object that wasn't created by new) or you may be trying to free/delete such an object more than once. You may be overflowing a buffer or otherwise writing to memory to which you shouldn't be...