大约有 40,000 项符合查询结果(耗时:0.0625秒) [XML]
Convert DataFrame column type from string to datetime, dd/mm/yyyy format
...
The easiest way is to use to_datetime:
df['col'] = pd.to_datetime(df['col'])
It also offers a dayfirst argument for European times (but beware this isn't strict).
Here it is in action:
In [11]: pd.to_datetime(pd.Series(['05/23/2005']))
Out[11]:
0 ...
About .bash_profile, .bashrc, and where should alias be written in? [duplicate]
...s and functions into my .bashrc file;
I put this
#!/bin/bash
#
# CRM .bash_profile Time-stamp: "2008-12-07 19:42"
#
# echo "Loading ${HOME}/.bash_profile"
source ~/.profile # get my PATH setup
source ~/.bashrc # get my Bash aliases
in my .bash_profile file.
Oh, and the reason you need to type ...
UINavigationBar Hide back Button Text
...idLoad()
self.delegate = self
}
func navigationController(_ navigationController: UINavigationController, willShow viewController: UIViewController, animated: Bool) {
let item = UIBarButtonItem(title: " ", style: .plain, target: nil, action: nil)
viewController.navig...
Disable messages upon loading a package
...The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: x86_64-pc-linux-gnu (64-bit)
[...]
R> suppressMessages(library(ROCR))
R> # silently loaded
R> search()
[1] ".GlobalEnv" "package:ROCR" # it's really there...
Mongoose's find method with $or condition does not work properly
...the 'param' must consist of more than 12 characters.
User.find( { $or:[ {'_id':objId}, {'name':param}, {'nickname':param} ]},
function(err,docs){
if(!err) res.send(docs);
});
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improv...
Where does 'Hello world' come from?
...irst edition of the C book, was published in 1978 en.wikipedia.org/wiki/The_C_Programming_Language_(book) There was a "a 1974 Bell Laboratories internal memorandum by Brian Kernighan, Programming in C: A Tutorial" en.wikipedia.org/wiki/Hello_world_program
– barlop
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gulp globbing- how to watch everything below directory
... if a file does not have a 'period' in it, it will not match. Perhaps there_ought_ to be a special case for . as . via DIR on Windows matches 'LICENSE', but unfortunately ln *.* does not. Two different meanings to '.' is sad. * seems to do what we need. A . glob is probably never what the developer ...
Bootstrap throws Uncaught Error: Bootstrap's JavaScript requires jQuery [closed]
...hat jQuery is installed via Bower and so you might need to look under bower_components/jquery/dist/jquery.js .. the "dist" part being what I had overlooked.
– Jax Cavalera
Mar 6 '16 at 10:12
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No internet on Android emulator - why and how to fix? [closed]
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command line: emulator -avd Pixel_C_API_26 -dns-server 8.8.8.8,8.8.4.4
– Tom
Nov 15 '17 at 2:30
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List all tables in postgresql information_schema
...t is the best way to list all of the tables within PostgreSQL's information_schema?
8 Answers
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