大约有 45,000 项符合查询结果（耗时：0.0534秒） [XML]
Changing case in Vim
Is there a command in Vim that changes the case of the selected text?
2 Answers
2
...
Generate random 5 characters string
I want to create exact 5 random characters string with least possibility of getting duplicated. What would be the best way to do it? Thanks.
...
What's the longest possible worldwide phone number I should consider in SQL varchar(length) for phon
...s the longest possible worldwide phone number I should consider in SQL varchar(length) for phone.
5 Answers
...
How to calculate the SVG Path for an arc (of a circle)
...so far, there are actually four arcs that could be drawn, so the two flags select one of them. I'm guessing you probably want to draw a small arc (meaning large-arc-flag=0), in the direction of decreasing angle (meaning sweep-flag=0). All together, the SVG path is:
M 200 175 A 25 25 0 0 0 182.322 2...
How can I return an empty IEnumerable?
...rExists) yield break; foreach(var descendant in doc.Descendants("user").Select(user => new Friend { ID = user.Element("id").Value, Name = user.Element("name").Value, URL = user.Element("url").Value, Photo = user.Element("photo").Value })) { yield r...
Count number of occurrences of a given substring in a string
...
s = 'sub1 sub2 sub3'
s.split().index('sub2')
>>> 1
You mean the char-position of the sub-string in the string:
s.find('sub2')
>>> 5
You mean the (non-overlapping) counts of appearance of a su-bstring:
s.count('sub2')
>>> 1
s.count('sub')
>>> 3
...
Twig ternary operator, Shorthand if-then-else
...
{{ (ability.id in company_abilities) ? 'selected' : '' }}
The ternary operator is documented under 'other operators'
share
|
improve this answer
|
...
SQLite table constraint - unique on multiple columns
...Some other title');
sqlite> .mode col
sqlite> .headers on
sqlite> select * from t1;
id a b
---------- ---------- ----------------
1 Alice Some other title
2 Bob Palindromic guy
3 Charles chucky cheese
sq...
Linux command to print directory structure in the form of a tree
...
Beware of the newline character at the end of the first line if copying this directly
– Rahul
Aug 5 '16 at 16:46
2
...
Difference between UTF-8 and UTF-16?
...
Both UTF-8 and UTF-16 are variable length encodings. However, in UTF-8 a character may occupy a minimum of 8 bits, while in UTF-16 character length starts with 16 bits.
Main UTF-8 pros:
Basic ASCII characters like digits, Latin characters with no accents, etc. occupy one byte which is identical...