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dispatch_after - GCD in Swift?
I've gone through the iBook from Apple, and couldn't find any definition of it:
24 Answers
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How to add a Timeout to Console.ReadLine()?
...f you want to have a normal (non-timed) ReadLine call, just use the Reader and omit the timeout, so that it defaults to an infinite timeout.
So how about those problems of the other solutions I mentioned?
As you can see, ReadLine is used, avoiding the first problem.
The function behaves properly ...
How do i find out what all symbols are exported from a shared object?
..., a UNIX shared library, or a Windows DLL? These are all different things, and your question conflates them all :-(
For an AIX shared object, use dump -Tv /path/to/foo.o.
For an ELF shared library, use readelf -Ws /path/to/libfoo.so, or (if you have GNU nm) nm -D /path/to/libfoo.so.
For a non-ELF ...
The simplest possible JavaScript countdown timer? [closed]
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I have two demos, one with jQuery and one without. Neither use date functions and are about as simple as it gets.
Demo with vanilla JavaScript
function startTimer(duration, display) {
var timer = duration, minutes, seconds;
setInterval(functio...
html5 localStorage error with Safari: “QUOTA_EXCEEDED_ERR: DOM Exception 22: An attempt was made to
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Any particular reason you (and @KingKongFrog) are using window.sessionStorage to detect if you can write to localStorage or are we in a weird copy-paste typo cycle?
– Yetti
Apr 24 '14 at 21:09
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Serializing a list to JSON
...atively, other, less mainstream options are available like Utf8Json parser and Jil: These may offer superior performance, if you really need it but, you will need to install their respective packages.
If stuck using .Net Core 2.2 or earlier;
Default to using Newtonsoft JSON.Net as your first choic...
How can I check for an empty/undefined/null string in JavaScript?
... tools, testing === '' vs .length didn't show any discernible improvement (and using .length only works if you can assume that you have a string)
– bdukes
Sep 27 '10 at 13:19
27
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How to rollback a specific migration?
...STEP=5
Will also rollback all the migration that happened later (4, 3, 2 and also 1).
To roll back all migrations back to (and including) a target migration, use: (This corrected command was added AFTER all the comments pointing out the error in the original post)
rake db:migrate VERSION=2010090...
ld cannot find an existing library
...too. This way, you can have several versions of a library in your system, and if an application needs a specific one, it can link to it, while in general, the newest one is chosen by symlink. I do not know why this symlink was missing.
– Svante
Dec 3 '08 at 1...
JSON parsing using Gson for Java
...the use more generic - you will find that Gson's javadocs are pretty clear and helpful.
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