大约有 44,500 项符合查询结果（耗时：0.0274秒） [XML]
What is makeinfo, and how do I get it?
...d Sep 4 '19 at 21:25
Samuel LelièvreSamuel Lelièvre
1,74388 silver badges1414 bronze badges
...
How do I check if a string is a number (float)?
...ions about what is an integer e.g., for the Unicode character u'\u00b9': u'¹'.isdigit() is True but int(u'¹') raises ValueError.
– jfs
Nov 16 '12 at 16:03
8
...
Safe (bounds-checked) array lookup in Swift, through optional bindings?
...in where the fashion of Swift programming is going, which in Crusty's words¹ is: "Think protocols first"
• What do we want to do?
- Get an Element of an Array given an Index only when it's safe, and nil otherwise
• What should this functionality base it's implementation on?
- Array subscript...
How to manually expand a special variable (ex: ~ tilde) in bash
... Preferably, I'd go with either of these two:
Charle's Duffy's solution
Håkon Hægland's solution
Original answer for historic purposes (but please don't use this)
If I'm not mistaken, "~" will not be expanded by a bash script in that manner because it is treated as a literal string "~". You...
Is double square brackets [[ ]] preferable over single square brackets [ ] in Bash?
...Bash 4.3.11:
POSIX vs Bash extension:
[ is POSIX
[[ is a Bash extension¹
regular command vs magic
[ is just a regular command with a weird name.
] is just an argument of [ that prevents further arguments from being used.
Ubuntu 16.04 actually has an executable for it at /usr/bin/[ provided...
Android: Is it possible to display video thumbnails?
...ed Mar 9 '16 at 23:33
Edouard BrèthesEdouard Brèthes
93299 silver badges2424 bronze badges
...
LaTeX source code listing like in professional books
...r 12 '09 at 17:13
Tormod FjeldskårTormod Fjeldskår
5,75611 gold badge2525 silver badges4747 bronze badges
...
How to implement the Android ActionBar back button?
... answered Apr 17 '15 at 7:30
Sågär ŚåxëńáSågär Śåxëńá
10111 silver badge66 bronze badges
...
Can I use a function for a default value in MySql?
... Nov 6 '08 at 21:24
Thibaut BarrèreThibaut Barrère
8,38322 gold badges1919 silver badges2727 bronze badges
...
Browser statistics on JavaScript disabled [closed]
...try (The German Federal Office for Information Security strongly recommends¹ all citizens to install NoScript.) and also available competition on the market (if your site is unique and I really want to use it, I’ll allow scripts; otherwise, I go to your competitor) might have a strong influence. ...