大约有 43,000 项符合查询结果（耗时：0.0674秒） [XML]
How can I get the external SD card path for Android 4.0+?
...e directory mnt first and work from there..
You should use some type of selection method to choose which sdcard to use:
File storageDir = new File("/mnt/");
if(storageDir.isDirectory()){
String[] dirList = storageDir.list();
//TODO some type of selecton method?
}
...
Capture key press (or keydown) event on DIV element
...
+1 tabindex is the key point here to make the div 'selectable'. JQuery not necessary, the same thing works with Angular as well as (I suppose) with plain javascript events.
– Jukka Dahlbom
Feb 12 '14 at 10:57
...
Two versions of python on linux. how to make 2.7 the default
...n in /usr/bin, and may have scripts that depend on this being present, and selected by #! /usr/bin/env python. You can usually get away with running Python 2.6 scripts in 2.7, but do you want to risk it?
On top of that, monkeying with /usr/bin can break your package manager's ability to manage pack...
What are naming conventions for MongoDB?
... singular (collections are plural)
MongoDB states a nice example:
To select a database to use, in the mongo shell, issue the use <db>
statement, as in the following example:
use myDB
use myNewDB
Content from: https://docs.mongodb.com/manual/core/databases-and-collections/#...
Retrieve the commit log for a specific line in a file?
...y easy way to do this is by using vim-fugitive. Just open the file in vim, select the line(s) you're interested in using V, then enter
:Glog
Now you can use :cnext and :cprev to see all the revisions of the file where that line is modified. At any point, enter :Gblame to see the sha, author, and ...
Are PostgreSQL column names case-sensitive?
...ife: ("first_Name")
So, yes, PostgreSQL column names are case-sensitive:
SELECT * FROM persons WHERE "first_Name" = 'xyz';
Also fix the incorrect double-quotes around 'xyz'. Values (string literals) are enclosed in single quotes.
Read the manual here.
My standing advice is to use legal, lower...
Input size vs width
...bly preferable to the inline style attribute.
You still need size for <select multiple> to get the height to line up with the options properly. But I'd not use it on an <input>.
share
|
...
Regex: Specify “space or start of string” and “space or end of string”
...
The easier way to exclude the group selection from the match is (?:^|\s)
– user2426679
Oct 22 '15 at 16:48
7
...
How to find where gem files are installed
...an check it from your command prompt by running gem help commands and then selecting the proper command:
kirti@kirti-Aspire-5733Z:~$ gem help commands
GEM commands are:
build Build a gem from a gemspec
cert Manage RubyGems certificates and signing settin...
Replace None with NaN in pandas dataframe
... dtype fields in your df and then replace the None:
obj_columns = list(df.select_dtypes(include=['object']).columns.values)
df[obj_columns] = df[obj_columns].replace([None], np.nan)
share
|
improv...