大约有 26,000 项符合查询结果（耗时：0.0478秒） [XML]
pandas GroupBy columns with NaN (missing) values
I have a DataFrame with many missing values in columns which I wish to groupby:
9 Answers
...
Capture characters from standard input without waiting for enter to be pressed
I can never remember how I do this because it comes up so infrequently for me. But in C or C++, what is the best way to read a character from standard input without waiting for a newline (press enter).
...
How to automate createsuperuser on django?
...
At least on Django 1.11. the order of the arguments is ('username', 'email', 'pass'), not ('email', 'username', 'pass'). See: docs.djangoproject.com/en/1.11/ref/contrib/auth/…
– np8
May 14 '17 at 12:29
...
How can I get pg_dump to authenticate properly
...st variable PGPASSWORD and .pgpass and neither of these two will allow me to authenticate to the database. I have chmod 'd .pgpass to appropriate permissions and also tried:
...
In Clojure 1.3, How to read and write a file
I'd like to know the "recommended" way of reading and writing a file in clojure 1.3 .
6 Answers
...
Making a LinearLayout act like an Button
...ve styled to look like a button , and it contains a few text/ImageView elements. I would like to make the whole LinearLayout act like a button , in particular to give it states that are defined in a so it has a different background when it is pressed.
...
advantage of tap method in ruby
...ading a blog article and noticed that the author used tap in a snippet something like:
18 Answers
...
How do I iterate through table rows and cells in JavaScript?
...gt;) of each row(<tr>), then this is the way to go.
var table = document.getElementById("mytab1");
for (var i = 0, row; row = table.rows[i]; i++) {
//iterate through rows
//rows would be accessed using the "row" variable assigned in the for loop
for (var j = 0, col; col = row.cells[j...
How to set up tmux so that it starts up with specified windows opened?
... I have the following in a shell script that I call dev-tmux. A dev environment:
#!/bin/sh
tmux new-session -d 'vim'
tmux split-window -v 'ipython'
tmux split-window -h
tmux new-window 'mutt'
tmux -2 attach-session -d
So everytime I want to launch my favorite dev environment I can just do
$ dev-...
Get path of executable
...hat I know.
For Linux: readlink /proc/self/exe
Windows: GetModuleFileName
share
|
improve this answer
|
follow
|
...