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What does the property “Nonatomic” mean?
...se a lock to ensure that another thread doesn't interfere with the correct setting/getting of the value.
it is not actually a keyword.
Example :
@property (retain) NSString *name;
@synthesize name;
nonatomic
Nonatomic means multiple thread access the variable (dynamic type).
Nonatomic is th...
What really is a deque in STL?
I was looking at STL containers and trying to figure what they really are (i.e. the data structure used), and the deque stopped me: I thought at first that it was a double linked list, which would allow insertion and deletion from both ends in constant time, but I am troubled by the promise made ...
How to round up a number to nearest 10?
...
TallGreenTree is correct. You can set the rounding mode with the 3rd argument: "mode One of PHP_ROUND_HALF_UP, PHP_ROUND_HALF_DOWN, PHP_ROUND_HALF_EVEN, or PHP_ROUND_HALF_ODD. "
– d-_-b
Jun 17 '11 at 2:40
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How can I print variable and string on same line in Python?
... you to do some other things as well, like padding, fill, alignment,width, set precision etc
>>> print "{:d} {:03d} {:>20f}".format(1,2,1.1)
1 002 1.100000
^^^
0's padded to 2
Demo:
>>> births = 4
>>> print "If there was a birth every 7 seconds, there w...
AWS: How to disable all services?
...harges. Then I went and searched for them in the console and google how to set them off or disable or delete.I can't really remember as this was two years ago.
– Mohammed Joraid
May 28 '19 at 7:45
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How do I fire an event when a iframe has finished loading in jQuery?
...itForIFrame() {
if (iframe.readyState != "complete") {
setTimeout("WaitForIFrame();", 200);
} else {
done();
}
}
function done() {
//some code after iframe has been loaded
}
</script>
Hope this helps.
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任意组件块 · App Inventor 2 中文网
...附加参数，即属性的新值。
图 2. 任何属性 getter 和 setter 的示例块。
方法
任意组件方法块的功能都类似于属性 getter 和 setter。 对于组件上的任何给定方法，相应的任意组件块将采用组件和该方法所需的所...
Why not inherit from List?
When planning out my programs, I often start with a chain of thought like so:
27 Answers
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How to rename files and folder in Amazon S3?
...in S3. What you have to do is copy the existing file with a new name (just set the target key) and delete the old one.
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How to create a database from shell command?
...="pass_bla"
mysql -uroot -prootpassword -e "CREATE DATABASE $DB CHARACTER SET utf8 COLLATE utf8_general_ci";
mysql -uroot -prootpassword -e "CREATE USER $USER@'127.0.0.1' IDENTIFIED BY '$PASS'";
mysql -uroot -prootpassword -e "GRANT SELECT, INSERT, UPDATE ON $DB.* TO '$USER'@'127.0.0.1'";
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