大约有 44,900 项符合查询结果(耗时:0.0642秒) [XML]
What is a higher kinded type in Scala?
...
289
Let me make up for starting some of this confusion by pitching in with some disambiguation. I...
Why in Java 8 split sometimes removes empty strings at start of result array?
...Java 8. The code is retrieved from grepcode, for version 7u40-b43 and 8-b132.
Java 7
public String[] split(CharSequence input, int limit) {
int index = 0;
boolean matchLimited = limit > 0;
ArrayList<String> matchList = new ArrayList<>();
Matcher m = matcher(input);
...
Read only the first line of a file?
...
Use the .readline() method (Python 2 docs, Python 3 docs):
with open('myfile.txt') as f:
first_line = f.readline()
Some notes:
As noted in the docs, unless it is the only line in the file, the string returned from f.readline() will contain a trailing ...
Rename all files in directory from $filename_h to $filename_half?
...
|
edited Aug 26 '16 at 22:11
sclarson
4,20133 gold badges2929 silver badges4343 bronze badges
...
How to get a value from a cell of a dataframe?
...value using the column name:
In [3]: sub_df
Out[3]:
A B
2 -0.133653 -0.030854
In [4]: sub_df.iloc[0]
Out[4]:
A -0.133653
B -0.030854
Name: 2, dtype: float64
In [5]: sub_df.iloc[0]['A']
Out[5]: -0.13365288513107493
...
Unignore subdirectories of ignored directories in Git
...
edited Feb 17 '18 at 14:02
Buo-ren Lin
12077 bronze badges
answered Mar 12 '11 at 21:15
...
How can I get the behavior of GNU's readlink -f on a Mac?
...
24 Answers
24
Active
...
How to check if element is visible after scrolling?
...
1
2
Next
1272
...
Insert the carriage return character in vim
...
|
edited Jul 21 '13 at 8:36
Hulk1991
2,3771010 gold badges2828 silver badges4444 bronze badges
...
Git: Recover deleted (remote) branch
...
answered Jan 2 '10 at 19:06
iamamaciamamac
8,28033 gold badges3030 silver badges3030 bronze badges
...
