大约有 40,000 项符合查询结果（耗时：0.0934秒） [XML]
How to convert CFStringRef to NSString?
...n objects with +1 reference counts, meaning that they need to be released (all CF[Type]Create format functions do this).
The nice thing is that in Cocoa you can safely use autorelease or release to free them up.
share
...
Can I use Objective-C blocks as properties?
... @CharlieMonroe - Yes you are probably right, but dont you need a dealloc implementation to nil or release the block property without ARC? (its been a while since I used non-ARC)
– Robert
Mar 31 '13 at 21:58
...
Regular expression to match a line that doesn't contain a word
...──┴───┴──┴───┴──┴───┴──┘
index 0 1 2 3 4 5 6 7
where the e's are the empty strings. The regex (?!hede). looks ahead to see if there's no substring "hede" to be seen, and if that is the case (so something else is...
finding and replacing elements in a list
... This is really slow in comparison to using native list methods like .index(10). There is no reason to list every list element to find a the elements that need to be replaced. Please see timing in my answer here.
– dawg
May 10 at 19:09
...
rgdal package installation
...liam Kyngesburye at http://www.kyngchaos.com/ may be used for
source installs on OSX.
As you seem to be under Linux, you always build package from source, so you will have to install the corresponding libraries on your system. If you are under Mint, Ubuntu or another Debian derivative, you can d...
ssl_error_rx_record_too_long and Apache SSL [closed]
...default_:443>
Error code: ssl_error_rx_record_too_long
This usually means the implementation of SSL on your server is not correct. The error is usually caused by a server side problem which the server administrator will need to investigate.
Below are some things we recommend trying....
How do I merge changes to a single file, rather than merging commits?
...heckout -- <pathspec> if you want to checkout these paths out of the index." This is because you could have both a branch and a file/path by the same name. In such cases, rather than asking you to disambiguate whether the branch or the path should be checked out when both exist, git will opt t...
What is the purpose of willSet and didSet in Swift?
... for instance to notify other objects that the property just changed. When all you have is get/set, you need another field to hold the value. With willSet and didSet, you can take action when the value is modified without needing another field. For instance, in that example:
class Foo {
var myP...
Replace multiple characters in one replace call
... just have to chain. However, you could add a prototype:
String.prototype.allReplace = function(obj) {
var retStr = this;
for (var x in obj) {
retStr = retStr.replace(new RegExp(x, 'g'), obj[x]);
}
return retStr;
};
console.log('aabbaabbcc'.allReplace({'a': 'h', 'b': 'o'}))...
Getting the client's timezone offset in JavaScript
...refox and Safari, but different in IE. So, you can't count on the constant indexes either. Mon Dec 02 2013 10:22:50 GMT-0500 (EST) : Chrome, FF, Safari; Mon Dec 2 10:22:50 EST 2013 : IE10
– adimauro
Dec 2 '13 at 15:32
...