大约有 44,400 项符合查询结果（耗时：0.0812秒） [XML]
What is the difference between `let` and `var` in swift?
...
The let keyword defines a constant:
let theAnswer = 42
The theAnswer cannot be changed afterwards. This is why anything weak can't be written using let. They need to change during runtime and you must be using var instead.
The var defines an ordinary variable.
What is inte...
month name to month number and vice versa in python
...calendar
{v: k for k,v in enumerate(calendar.month_abbr)}
Before Python (2.7+) you would do
dict((v,k) for k,v in enumerate(calendar.month_abbr))
share
|
improve this answer
|
...
How to install Hibernate Tools in Eclipse?
...
answered Jan 27 '09 at 14:11
tremortremor
...
What is the maximum possible length of a query string?
...
RFC 2616 (Hypertext Transfer Protocol — HTTP/1.1) states there is no limit to the length of a query string (section 3.2.1). RFC 3986 (Uniform Resource Identifier — URI) also states there is no limit, but indicates the hostnam...
How do I convert between big-endian and little-endian values in C++?
...
1
2
Next
171
...
Get names of all files from a folder with Ruby
...
edited Nov 18 '09 at 13:02
Mike Woodhouse
47.6k1212 gold badges8585 silver badges123123 bronze badges
a...
What are the options for storing hierarchical data in a relational database? [closed]
...00:053 (compared to 00:00:00:870)
Duration for 10,000 Nodes = 00:00:00:323 (compared to 00:01:01:783)
Duration for 100,000 Nodes = 00:00:03:867 (compared to 00:49:59:730)
Duration for 1,000,000 Nodes = 00:00:54:283 (compared to something like 2 days!!!)
Yes, that's correct. 1 million nodes c...
How to get key names from JSON using jq
...tBox", "Manifest-Version" : "1.0", "appname" : "testApp", "build-date" : "02-03-2014-13:41", "version" : "testBox" }
$ jq 'keys' file.json
[
"Archiver-Version",
"Build-Id",
"Build-Jdk",
"Build-Number",
"Build-Tag",
"Built-By",
"Created-By",
"Implementation-Title",
"Implementation-...
How do I break out of a loop in Perl?
...
Alexander Roskamp
2766 bronze badges
answered Nov 19 '08 at 20:23
Zain RizviZain Rizvi
20.7k1717...
How to hide command output in Bash
...
250
Use this.
{
/your/first/command
/your/second/command
} &> /dev/null
Explanation
...