大约有 30,000 项符合查询结果(耗时:0.0495秒) [XML]
iPhone OS: How do I create an NSDate for a specific date?
...TimeZone setDateFormat:@"MMM dd, yyyy"];
NSDate *theDate = nil;
NSError *error = nil;
if (![rfc3339TimestampFormatterWithTimeZone getObjectValue:&theDate forString:dateString range:nil error:&error]) {
NSLog(@"Date '%@' could not be parsed: %@", dateString, error);
}...
Why does installing Nokogiri on Mac OS fail with libiconv is missing?
...10.9.3 and whatever I try, the install fails in the end with the following error message:
33 Answers
...
How to make MySQL handle UTF-8 properly
...ne of the responses to a question I asked yesterday suggested that I should make sure my database can handle UTF-8 characters correctly. How I can do this with MySQL?
...
SVN - Checksum mismatch while updating
When I try to update some files from Subversion, I get the error:
15 Answers
15
...
AngularJS - how to get an ngRepeat filtered result reference
I am using an ng-repeat directive with filter like so:
6 Answers
6
...
How to create an empty file at the command line in Windows?
...one I use is basically the one by Nomad:
.>out.txt
It does give an error:
'.' is not recognized as an internal or external command
But this error is on stderr. And > only redirects stdout, where nothing have been produced.
Hence the creation of an empty file. The error message can be ...
What is the use case of noop [:] in bash?
...o" != "1" ]
then
#echo Success
fi
Which causes bash to give a syntax error:
line 4: syntax error near unexpected token `fi'
line 4: `fi'
Bash can't have empty blocks (WTF). So you add a no-op:
if [ "$foo" != "1" ]
then
#echo Success
:
fi
or you can use the no-op to comment out...
Swift class introspection & generics
...ft class I tried...
class MyClass {
}
let MyClassRef = MyClass.self
// ERROR :(
let my_obj = MyClassRef()
Hmm… the error says:
Playground execution failed: error: :16:1: error: constructing an object of class type 'X' with a metatype value requires an '@required' initializer
Y().me()
...
Using python map and other functional tools
This is quite n00bish, but I'm trying to learn/understand functional programming in python. The following code:
9 Answers
...