大约有 35,487 项符合查询结果（耗时：0.0508秒） [XML]
ImportError: No module named pip
OS: Mac OS X 10.7.5
Python Ver: 2.7.5
16 Answers
16
...
What is the difference between instanceof and Class.isAssignableFrom(…)?
...
506
When using instanceof, you need to know the class of B at compile time. When using isAssignabl...
JavaScript variables declare outside or inside loop?
...u've got yourself an accidental global.
In particular:
for (var i; i<100; i++)
do something;
for (var i; i<100; i++)
do something else;
Crockford will recommend you remove the second var (or remove both vars and do var i; above), and jslint will whinge at you for this. But IMO it'...
How can I check file size in Python?
...something based on the file size. For example, if the size is greater than 0, I will send an email to somebody, otherwise continue to other things.
...
Python: try statement in a single line
...iables to something. If they might not get set, set them to None first (or 0 or '' or something if it is more applicable.)
If you do assign all the names you are interested in first, you do have options.
The best option is an if statement.
c = None
b = [1, 2]
if c is None:
a = b
else:
...
How to get names of classes inside a jar file?
.../', '.'); // including ".class"
classNames.add(className.substring(0, className.length() - ".class".length()));
}
}
Option (b): Using specialized reflections libraries
Guava
Guava has had ClassPath since at least 14.0, which I have used and liked. One nice thing about ClassPath is th...
Do you use source control for your database items? [closed]
... about a tool.
– ulty4life
Oct 27 '10 at 22:42
1
There's a distributed version control system for...
how to reset
I am developing a metro app with VS2012 and Javascript
27 Answers
27
...
JavaScript query string [closed]
...
answered Mar 15 '09 at 5:33
Shadow2531Shadow2531
11.1k55 gold badges2828 silver badges3838 bronze badges
...
Detect Safari browser
...
110
You can easily use index of Chrome to filter out Chrome:
var ua = navigator.userAgent.toLowerCa...