大约有 43,000 项符合查询结果（耗时：0.0273秒） [XML]
Differences between Oracle JDK and OpenJDK
...
11 Answers
11
Active
...
Convert a row of a data frame to vector
...
156
When you extract a single row from a data frame you get a one-row data frame. Convert it to a...
SQL: capitalize first letter only [duplicate]
...
190
Are you asking for renaming column itself or capitalise the data inside column? If its data yo...
How to get first character of a string in SQL?
...
LEFT(colName, 1) will also do this, also. It's equivalent to SUBSTRING(colName, 1, 1).
I like LEFT, since I find it a bit cleaner, but really, there's no difference either way.
...
How do I use floating-point division in bash?
...
18 Answers
18
Active
...
Decreasing for loops in Python impossible?
...
for n in range(6,0,-1):
print n
# prints [6, 5, 4, 3, 2, 1]
share
|
improve this answer
|
follow
|
...
How to profile a bash shell script slow startup?
...
132
If you have GNU date (or another version that can output nanoseconds), do this at the beginnin...
Creating dataframe from a dictionary where entries have different lengths
Say I have a dictionary with 10 key-value pairs. Each entry holds a numpy array. However, the length of the array is not the same for all of them.
...
Current time formatting with Javascript
...
14 Answers
14
Active
...
Understanding dict.copy() - shallow or deep?
...
1010
By "shallow copying" it means the content of the dictionary is not copied by value, but just ...