大约有 43,100 项符合查询结果（耗时：0.0422秒） [XML]
How do I reset the scale/zoom of a web app on an orientation change on the iPhone?
...
11 Answers
11
Active
...
Deleting DataFrame row in Pandas based on column value
...
10 Answers
10
Active
...
What are the Ruby Gotchas a newbie should be warned about? [closed]
...s strict: 0, "" and [] are all evaluated to true. In C, the expression 0 ? 1 : 0 evaluates to 0 (i.e. false). In Ruby, however, it yields 1, as all numbers evaluate to true; only nil and false evaluate to false. A corollary to this rule is that Ruby methods by convention — for example, regular-exp...
Can hash tables really be O(1)?
It seems to be common knowledge that hash tables can achieve O(1), but that has never made sense to me. Can someone please explain it? Here are two situations that come to mind:
...
Getting the first and last day of a month, using a given DateTime object
...
15 Answers
15
Active
...
Reverse a string in Python
...
How about:
>>> 'hello world'[::-1]
'dlrow olleh'
This is extended slice syntax. It works by doing [begin:end:step] - by leaving begin and end off and specifying a step of -1, it reverses a string.
...
Ruby - test for array
... |
edited Mar 30 at 18:35
siery
17311 silver badge1212 bronze badges
answered Oct 6 '09 at 20:23
...
How to get the difference between two arrays in JavaScript?
...
1
2
3
Next
230
...