大约有 47,000 项符合查询结果（耗时：0.0435秒） [XML]
Better techniques for trimming leading zeros in SQL Server?
...
SUBSTRING(str_col, PATINDEX('%[^0]%', str_col+'.'), LEN(str_col))
share
|
improve this answer
|
follow
|
...
Import pandas dataframe column as string not int
...
Just want to reiterate this will work in pandas >= 0.9.1:
In [2]: read_csv('sample.csv', dtype={'ID': object})
Out[2]:
ID
0 00013007854817840016671868
1 00013007854817840016749251
2 00013007854817840016754630
3 00013007854817840016781876
4 00...
Show percent % instead of counts in charts of categorical variables
... geom_bar(aes(y = (..count..)/sum(..count..))) +
## version 3.0.0
scale_y_continuous(labels=percent)
Here's a reproducible example using mtcars:
ggplot(mtcars, aes(x = factor(hp))) +
geom_bar(aes(y = (..count..)/sum(..count..))) +
scale_y_continuous(labels...
What are the minimum margins most printers can handle?
...
Every printer is different but 0.25" (6.35 mm) is a safe bet.
share
|
improve this answer
|
follow
|
...
Github (SSH) via public WIFI, port 22 blocked
... |
edited Sep 27 '12 at 1:07
Fábio Batista
23.2k33 gold badges5050 silver badges6565 bronze badges
answ...
How do I validate a date string format in python?
...r("Incorrect data format, should be YYYY-MM-DD")
>>> validate('2003-12-23')
>>> validate('2003-12-32')
Traceback (most recent call last):
File "<pyshell#20>", line 1, in <module>
validate('2003-12-32')
File "<pyshell#18>", line 5, in validate
raise ...
What's the difference between lists enclosed by square brackets and parentheses in Python?
...
Ondrej K.
6,5401111 gold badges1515 silver badges2727 bronze badges
answered Jan 17 '12 at 19:04
jterracejterrace
...
How to read a file in reverse order?
...
answered Feb 20 '10 at 10:10
Matt JoinerMatt Joiner
94.2k8585 gold badges321321 silver badges483483 bronze badges
...
What's the point of g++ -Wreorder?
...
260
Consider:
struct A {
int i;
int j;
A() : j(0), i(j) { }
};
Now i is initialized t...