大约有 48,000 项符合查询结果(耗时:0.0605秒) [XML]
How to center align the cells of a UICollectionView?
...
80
I think you can achieve the single line look by implementing something like this:
- (UIEdgeInse...
Ruby: Merging variables in to a string
...
answered Feb 16 '09 at 21:42
Mike WoodhouseMike Woodhouse
47.6k1212 gold badges8585 silver badges123123 bronze badges
...
How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
... |
edited Jul 15 at 20:25
answered Aug 2 '09 at 13:35
...
String concatenation vs. string substitution in Python
...
... return "%s%s/%d" % (DOMAIN, QUESTIONS, n)
...
>>> so_q_sub(1000)
'http://stackoverflow.com/questions/1000'
>>> def so_q_cat(n):
... return DOMAIN + QUESTIONS + '/' + str(n)
...
>>> so_q_cat(1000)
'http://stackoverflow.com/questions/1000'
>>> t1 = timeit.Tim...
add a string prefix to each value in a string column using Pandas
...['col'].astype(str)
Example:
>>> df = pd.DataFrame({'col':['a',0]})
>>> df
col
0 a
1 0
>>> df['col'] = 'str' + df['col'].astype(str)
>>> df
col
0 stra
1 str0
share
...
What do 'real', 'user' and 'sys' mean in the output of time(1)?
...
2130
Real, User and Sys process time statistics
One of these things is not like the other. Real ref...
C# equivalent to Java's charAt()?
...
201
You can index into a string in C# like an array, and you get the character at that index.
Exam...
ViewPager with previous and next page boundaries
...
100
+50
Quoting ...
How to install a specific version of a ruby gem?
...
answered Jun 10 '13 at 14:37
mjsmjs
54.3k2424 gold badges7979 silver badges111111 bronze badges
...
Read a zipped file as a pandas DataFrame
...long form:
df = pd.read_csv('filename.zip', compression='zip', header=0, sep=',', quotechar='"')
Description of the compression argument from the docs:
compression : {‘infer’, ‘gzip’, ‘bz2’, ‘zip’, ‘xz’, None}, default ‘infer’
For on-the-fly decompression of on-d...
