大约有 47,000 项符合查询结果（耗时：0.0452秒） [XML]
MySQL - length() vs char_length()
...nt for Unicode, in which most characters are encoded in two bytes. Or UTF-8, where the number of bytes varies. For example:
select length(_utf8 '€'), char_length(_utf8 '€')
--> 3, 1
As you can see the Euro sign occupies 3 bytes (it's encoded as 0xE282AC in UTF-8) even though it's only on...
Call by name vs call by value in Scala, clarification needed
...
298
I've always thought this terminology is needlessly confusing. A function can have multiple parameters which vary in their call-by-name vs ca...
How can I fill out a Python string with spaces?
... Felix KlingFelix Kling
666k151151 gold badges968968 silver badges10321032 bronze badges
20
...
Method Overloading for null argument
...
218
Java will always try to use the most specific applicable version of a method that's available (s...
Simulating ENTER keypress in bash script
... |
edited Jun 25 '19 at 8:41
Michel de Ruiter
4,90955 gold badges3535 silver badges5555 bronze badges
...
Why do results vary based on curly brace placement?
...
answered Sep 4 '10 at 8:50
ResiduumResiduum
11k77 gold badges3535 silver badges6969 bronze badges
...
What does __FILE__ mean in Ruby?
...
edited May 23 '17 at 12:18
Community♦
111 silver badge
answered Oct 22 '08 at 3:30
...
Copy all files with a certain extension from all subdirectories
... |
edited Jun 4 '15 at 8:23
answered Mar 25 '13 at 14:10
...
How to get the anchor from the URL using jQuery?
...
208
You can use the .indexOf() and .substring(), like this:
var url = "www.aaa.com/task1/1.3.html#a...
How long is the SHA256 hash?
...mal representation, 4 bits are enough to encode each character (instead of 8, like for ASCII), so 256 bits would represent 64 hex characters, therefore you need a varchar(64), or even a char(64), as the length is always the same, not varying at all.
And the demo :
$hash = hash('sha256', 'hello, wo...