大约有 40,000 项符合查询结果（耗时：0.0495秒） [XML]
How enumerate all classes with custom class attribute?
...
I like LINQ. Love it, actually. But it takes a dependency on .NET 3.5, which yield return does not. Also, LINQ eventually breaks down to essentially the same thing as yield return. So what have you gained? A particular C# syntax, that is a prefere...
How can I search sub-folders using glob.glob module?
...er(files, '*.txt')]
This'll walk your directories recursively and return all absolute pathnames to matching .txt files. In this specific case the fnmatch.filter() may be overkill, you could also use a .endswith() test:
import os
path = 'C:/Users/sam/Desktop/file1'
configfiles = [os.path.join(di...
Pretty git branch graphs
I've seen some books and articles have some really pretty looking graphs of git branches and commits. How can I make high-quality printable images of git history?
...
sql query to return differences between two tables
...g to compare two tables, SQL Server, to verify some data. I want to return all the rows from both tables where data is either in one or the other. In essence, I want to show all the discrepancies. I need to check three pieces of data in doing so, FirstName, LastName and Product.
...
What are enums and why are they useful?
...
You should always use enums when a variable (especially a method parameter) can only take one out of a small set of possible values. Examples would be things like type constants (contract status: "permanent", "temp", "apprentice"), or flags ("execute now", "defer execution")....
How to check if multiple array keys exists
... check (like in the original question), it's probably easy enough to just call array_key_exists() twice to check if the keys exists.
if (array_key_exists("story", $arr) && array_key_exists("message", $arr)) {
// Both keys exist.
}
However this obviously doesn't scale up well to many k...
Pandas: Setting no. of max rows
...s default value like this:
pd.reset_option('display.max_rows')
And reset all of them back:
pd.reset_option('all')
share
|
improve this answer
|
follow
|
...
Delete all local changesets and revert to tree
I'm using Mercurial and I've got into a terrible mess locally, with three heads. I can't push, and I just want to delete all my local changes and commits and start again with totally clean code and a clean history.
...
Recursively add the entire folder to a repository
...gitignore file, if the subdirectory is ignored.
Then try again
git add --all
git commit -am "<commit message>"
git push
share
|
improve this answer
|
follow
...
dropping infinite values from dataframes in pandas?
...df.replace([np.inf, -np.inf], np.nan).dropna(subset=["col1", "col2"], how="all")
For example:
In [11]: df = pd.DataFrame([1, 2, np.inf, -np.inf])
In [12]: df.replace([np.inf, -np.inf], np.nan)
Out[12]:
0
0 1
1 2
2 NaN
3 NaN
The same method would work for a Series.
...