大约有 577 项符合查询结果（耗时：0.0221秒） [XML]
Difference between except: and except Exception as e: in Python
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agfagf
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Android: How can I get the current foreground activity (from a service)?
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140
Update: this no longer works with other apps' activities as of Android 5.0
Here's a good wa...
Effects of the extern keyword on C functions
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We have two files, foo.c and bar.c.
Here is foo.c
#include <stdio.h>
volatile unsigne...
When I catch an exception, how do I get the type, file, and line number?
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Simplest form that worked for me.
import traceback
try:
print(4/0)
except ZeroDivisionEr...
Cross browser JavaScript (not jQuery…) scroll to top animation
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function scrollTo(element, to, duration) {
if (duration <= 0) return;
var differenc...
What is the difference between Strategy design pattern and State design pattern?
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Honestly, the two patterns are pretty similar in practice, and the defining difference between...
How do I do base64 encoding on iOS?
...k benchmark: a 5.3MB image (JPEG) file took < 50ms to encode, and about 140ms to decode.
The code for the entire library (including the Base64 Methods) are available on GitHub.
Or alternatively, if you want the code to just the Base64 methods themselves, I've posted it here:
First, you need th...
How does collections.defaultdict work?
...d_int['f']
2
>>> d_int
defaultdict(<function foo at 0x7f34a0a0a140>, {'a': 10, 'c': 13, 'b': 12, 'e': 1, 'd': 0, 'f': 2})
Examples in the Question
Example 1
As int has been passed as default_factory, any unknown key will return 0 by default.
Now as the string is passed in the loo...
Difference between framework and static library in xcode4, and how to call them
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The biggest advantage a framework has over static libraries is that they act as a neat way of ...
Node.js - use of module.exports as a constructor
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BradBrad
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