大约有 35,432 项符合查询结果（耗时：0.0433秒） [XML]
Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
...look more in-depth at why Hash.new([]) doesn’t work:
h = Hash.new([])
h[0] << 'a' #=> ["a"]
h[1] << 'b' #=> ["a", "b"]
h[1] #=> ["a", "b"]
h[0].object_id == h[1].object_id #=> true
h #=> {}
We can see that our default object is being reused and mutated (t...
Do I need a Global.asax.cs file at all if I'm using an OWIN Startup.cs class and move all configurat
...
dmatsondmatson
5,79111 gold badge2020 silver badges2121 bronze badges
19
...
Don't Echo Out cURL
...
answered Dec 16 '09 at 22:54
Matt McCormickMatt McCormick
12.7k2020 gold badges6969 silver badges8080 bronze badges
...
How can I convert a string to a number in Perl?
...
90
You don't need to convert it at all:
% perl -e 'print "5.45" + 0.1;'
5.55
...
'str' object does not support item assignment in Python
...
105
In Python, strings are immutable, so you can't change their characters in-place.
You can, howe...
Does MySQL included with MAMP not include a config file?
...
Darryl Hein
131k8686 gold badges202202 silver badges255255 bronze badges
answered May 19 '10 at 21:51
Dirk EineckeDirk Einecke
...
Why does substring slicing with index out of range work?
...s. Look what happens when you do the same thing to a list:
>>> [0, 1, 2, 3, 4, 5][3]
3
>>> [0, 1, 2, 3, 4, 5][3:4]
[3]
Here the difference is obvious. In the case of strings, the results appear to be identical because in Python, there's no such thing as an individual character ...
Maven 3 warnings about build.plugins.plugin.version
...
410
Add a <version> element after the <plugin> <artifactId> in your pom.xml file. ...
Git merge without auto commit
... is saying Fast Forward
In such situations, you want to do:
git merge v1.0 --no-commit --no-ff
share
|
improve this answer
|
follow
|
...
How can I change UIButton title color?
...
answered Mar 19 '10 at 0:39
Ben GottliebBen Gottlieb
83.9k2222 gold badges171171 silver badges170170 bronze badges
...