大约有 32,294 项符合查询结果（耗时：0.0295秒） [XML]
Python JSON serialize a Decimal object
...I tried to think of some sort of way to encode Decimal objects and this is what I came up with:
import decimal
class DecimalEncoder(json.JSONEncoder):
def default(self, o):
if isinstance(o, decimal.Decimal):
return float(o)
return super(DecimalEncoder, self).default...
How to construct a timedelta object from a simple string
...parser.parse can parse durations, seems like it always returns a datetime. What am I missing?
– Nickolay
Jan 12 '14 at 13:36
7
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How to check for a valid Base64 encoded string
...
Regular expressions are never faster than what Tyler is suggesting.
– Vincent Koeman
Jun 10 '11 at 17:33
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How to check if a specified key exists in a given S3 bucket using Java
...abuse of exceptions as program control flow... this is simple, accurate at what it does, and safe. If you take your idea to the extreme (as apparently you are if you think this code snippet is abusing exceptions), then why have exceptions at all in a language? Rather than throw an exception to alert...
Crontab - Run in directory
...'s solution is to re-write the script with absolute paths. this is exactly what I needed
– Conrad.Dean
Jun 22 '12 at 15:53
2
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Hide scroll bar, but while still being able to scroll
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What about the horizontal scroll bars? How can you hide those?
– www139
Nov 9 '15 at 23:41
11
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How do I detect that an iOS app is running on a jailbroken phone?
...
It depends what you mean by jailbreak. In the simple case, you should be able to see if Cydia is installed and go by that - something like
NSString *filePath = @"/Applications/Cydia.app";
if ([[NSFileManager defaultManager] fileExists...
How to get a JavaScript object's class?
...-based language, as opposed to Java being a class-based one.
Depending on what you need getClass() for, there are several options in JavaScript:
typeof
instanceof
obj.constructor
func.prototype, proto.isPrototypeOf
A few examples:
function Foo() {}
var foo = new Foo();
typeof Foo; ...
How to Implement Custom Table View Section Headers and Footers with Storyboard
...t at this point. It's an odd omission in storyboard table views, but it is what it is. Use that kludgy hack with prototype cells if it you want, but personally, I just put up with the annoyance of the NIBs for the header/footer views.
– Rob
Jun 7 '16 at 15:09
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How to repeat a string a variable number of times in C++?
... is an old question, but I was looking to do the same thing and have found what I think is a simpler solution. It appears that cout has this function built in with cout.fill(), see the link for a 'full' explanation
http://www.java-samples.com/showtutorial.php?tutorialid=458
cout.width(11);
cout.fi...