大约有 48,000 项符合查询结果(耗时:0.0702秒) [XML]
Zooming MKMapView to fit annotation pins?
...
25 Answers
25
Active
...
What is the advantage of using forwarding references in range-based for loops?
...
|
edited Oct 29 '12 at 22:56
answered Oct 29 '12 at 22:50
...
Use rvmrc or ruby-version file to set a project gemset with RVM?
...
372
If your .rvmrc file contains custom shell code, continue using .rvmrc as it allows you to includ...
How to declare a global variable in JavaScript?
...
215
If you have to generate global variables in production code (which should be avoided) always d...
Find the day of a week
...
df = data.frame(date=c("2012-02-01", "2012-02-01", "2012-02-02"))
df$day <- weekdays(as.Date(df$date))
df
## date day
## 1 2012-02-01 Wednesday
## 2 2012-02-01 Wednesday
## 3 2012-02-02 Thursday
Edit: Just to show another way......
Why is SQL Server 2008 Management Studio Intellisense not working?
...tellisense just fails to work at all. The server I'm using is local and is 2008, the database is set to 2008 compatibility, Intellisense is on in every menu I can find, and yet no member list will pop up even with a CTRL-J.
...
Call int() function on every list element?
...
|
edited May 29 '18 at 16:43
Aran-Fey
27.5k55 gold badges6666 silver badges107107 bronze badges
...
Numpy where function multiple conditions
...
204
The best way in your particular case would just be to change your two criteria to one criterio...
PostgreSQL Crosstab Query
...rd SQL
);
INSERT INTO tbl VALUES
('A', 'Active', 1), ('A', 'Inactive', 2)
, ('B', 'Active', 4), ('B', 'Inactive', 5)
, ('C', 'Inactive', 7); -- ('C', 'Active') is missing
Simple form - not fit for missing attributes
crosstab(text) with 1 input parameter:
SELECT *
FROM ...
Generating v5 UUID. What is name and namespace?
...ntifier with a name. Type 3 UUIDs use MD5 and type 5 UUIDs use SHA1. Only 128-bits are available and 5 bits are used to specify the type, so all of the hash bits don't make it into the UUID. (Also MD5 is considered cryptographically broken, and SHA1 is on its last legs, so don't use this to verify d...
