大约有 23,000 项符合查询结果（耗时：0.0605秒） [XML]
Get Character value from KeyCode in JavaScript… then trim
..., // [61]
"GREATER_THAN", // [62]
"QUESTION_MARK", // [63]
"AT", // [64]
"A", // [65]
"B", // [66]
"C", // [67]
"D", // [68]
"E", // [69]
"F", // [70]
"G", // [71]
"H", // [72]
"I", // [73]
"J", // [74]
"K", // [75]
"L", // [76]
"M", // [77]
"N", // [78]
"O", // [...
Is 'switch' faster than 'if'?
...r [rsp+30h],4
13FE81C6F je testSwitch+0AFh (13FE81CAFh)
A jump table based solution does not use comparison at all.
Either not enough branches to cause the compiler to generate a jump table, or your compiler simply doesn't generate them. I'm not sure which.
EDIT 2014: There has been some dis...
Force HTML5 youtube video
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
Draft saved
Draft discarded
...
How do I increase the RAM and set up host-only networking in Vagrant?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
Draft saved
Draft discarded
...
String.Join method that ignores empty strings?
...nter this character by keyboard).
Also, if you get the values from a database, then it's even simpler, since you can do it in SQL directly:
PostgreSQL & MySQL:
SELECT
concat_ws(' / '
, NULLIF(searchTerm1, '')
, NULLIF(searchTerm2, '')
, NULLIF(searchTerm3, '')
...
Measure time in Linux - time vs clock vs getrusage vs clock_gettime vs gettimeofday vs timespec_get?
... issue in practice. Portability is questionable.
I wrote a hybrid function based on this snippet that uses clock_gettime when compiled on Linux, or a Mach timer when compiled on OS X, in order to get ns precision on both Linux and OS X.
All of the above exist in both Linux and OS X except where ot...
Is there any advantage of using map over unordered_map in case of trivial keys?
... typically faster.
One other point: the requirements for hashing and tree-based maps are different. Hashing obviously requires a hash function, and an equality comparison, where ordered maps require a less-than comparison. Of course the hybrid I mentioned requires both. Of course, for the common ca...
Difference between DateTime and Time in Ruby
... to handle larger values without producing errors.
DateTime is a calendar-based approach where the year, month, day, hour, minute and second are stored individually. This is a Ruby on Rails construct that serves as a wrapper around SQL-standard DATETIME fields. These contain arbitrary dates and can...
Can you use an alias in the WHERE clause in mysql?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
Draft saved
Draft discarded
...
How to add a custom loglevel to Python's logging facility
... bad practice of using internal methods (self._log) and why is each answer based on that?! The pythonic solution would be to use self.log instead so you don't have to mess with any internal stuff:
import logging
SUBDEBUG = 5
logging.addLevelName(SUBDEBUG, 'SUBDEBUG')
def subdebug(self, message, *...