大约有 40,000 项符合查询结果（耗时：0.0455秒） [XML]
What's the difference between %s and %d in Python string formatting?
...
what do you call these %s, %d, etc?
– Chaine
May 19 '17 at 18:21
1
...
How do you get a Golang program to print the line number of the error it just called?
...Fatal was ran. Is there no way of getting access to the line number that called log.Fatal? i.e. is there a way to get the line number when throwing an error?
...
How can I get a java.io.InputStream from a java.lang.String?
...
You might be right. I originally made it a comment probably because it wasn't an actual answer to OP's question.
– Andres Riofrio
Jul 15 '13 at 18:52
...
Error in exception handler. - Laravel
It's a Laravel-install related question. I have a public-facing Unix server setup:
6 Answers
...
How to convert a string or integer to binary in Ruby?
...
You would naturally use Integer#to_s(2), String#to_i(2) or "%b" in a real program, but, if you're interested in how the translation works, this method calculates the binary representation of a given integer using basic operators:
def int_t...
How to create a GUID/UUID using iOS
...tring = CFUUIDCreateString(NULL, theUUID);
CFRelease(theUUID);
return (__bridge NSString *)string;
}
EDIT: Jan, 29 2014:
If you're targeting iOS 6 or later, you can now use the much simpler method:
NSString *UUID = [[NSUUID UUID] UUIDString];
...
Property getters and setters
...g to backup the computed property. Try this:
class Point {
private var _x: Int = 0 // _x -> backingX
var x: Int {
set { _x = 2 * newValue }
get { return _x / 2 }
}
}
Specifically, in the Swift REPL:
15> var pt = Point()
pt: Point = {
_x = 0
}
16> pt.x = 10...
Unique fields that allow nulls in Django
...pty string by providing your own customized model form for Foo with a clean_bar method that turns the empty string into None:
class FooForm(forms.ModelForm):
class Meta:
model = Foo
def clean_bar(self):
return self.cleaned_data['bar'] or None
class FooAdmin(admin.ModelAdmin...
Is there a 'box-shadow-color' property?
... That's a great use of variables! Let's hope that they'll be supported in all browsers within the next few years :/
– fregante
Aug 18 '15 at 0:10
...
vagrant up failed, /dev/vboxnetctl: no such file or directory
Can be useful, I found this error. The common solution is reinstall virtualbox but there are a better way.
8 Answers
...