大约有 13,700 项符合查询结果（耗时：0.0258秒） [XML]
How to pip or easy_install tkinter on Windows
...nter these two commands:
>>> import tkinter
>>> tkinter._test()
This should pop up a small window; the first line at the top of the window should say "This is Tcl/Tk version 8.5"; make sure it is not 8.4!
2) Uninstall 64-bit Python and install 32 bit Python.
...
PostgreSQL Crosstab Query
...m is also limited to exactly three columns in the provided input query: row_name, category, value. There is no room for extra columns like in the 2-parameter alternative below.
Safe form
crosstab(text, text) with 2 input parameters:
SELECT *
FROM crosstab(
'SELECT section, status, ct
FR...
How to create a custom-shaped bitmap marker with Android map API v2 [duplicate]
...aw more complex and fancier stuff:
Bitmap.Config conf = Bitmap.Config.ARGB_8888;
Bitmap bmp = Bitmap.createBitmap(80, 80, conf);
Canvas canvas1 = new Canvas(bmp);
// paint defines the text color, stroke width and size
Paint color = new Paint();
color.setTextSize(35);
color.setColor(Color.BLACK);
...
Is there a recommended format for multi-line imports?
...BFeature, skipUnlessDBFeature,
)
from django.test.utils import (
ignore_warnings, modify_settings, override_settings,
override_system_checks, tag,
)
share
|
improve this answer
|
...
How to have stored properties in Swift, the same way I had on Objective-C?
...class ObjectAssociation<T: AnyObject> {
private let policy: objc_AssociationPolicy
/// - Parameter policy: An association policy that will be used when linking objects.
public init(policy: objc_AssociationPolicy = .OBJC_ASSOCIATION_RETAIN_NONATOMIC) {
self.policy = polic...
How do I convert a Ruby class name to a underscore-delimited symbol?
...ow can I programmatically turn a class name, FooBar , into a symbol, :foo_bar ? e.g. something like this, but that handles camel case properly?
...
Redirect parent window from an iframe action
...RL 'jsfiddle.net/ppkzS' from frame with URL 'parrisstudios.com/tests/iframe_redirect.html'. The frame attempting navigation of the top-level window is sandboxed, but the 'allow-top-navigation' flag is not set.
– Bjarte Aune Olsen
Mar 18 '15 at 9:09
...
Error Dropping Database (Can't rmdir '.test\', errno: 17)
... a strange file ".empty":
sh-3.2# ls -la data/test
total 0
drwxr-xr-x 3 _mysql wheel 102 Apr 15 12:36 .
drwxr-xr-x 11 _mysql wheel 374 Apr 15 12:28 ..
-rw-r--r-- 1 _mysql wheel 0 Mar 31 10:19 .empty
Once I rm'd the .empty file, the drop database command succeeded.
I don't know whe...
Python - When to use file vs open
...bove natively support the with statement. In Python 2.5, you must add from __future__ import with_statement to the top of your code.
– IceArdor
Jul 14 '14 at 20:40
...
Package objects
...initions get imported when someone outside of that package imports foo.bar._.
This way you can prevent to require the API client to issue additional imports to use your library effectively - e.g. in scala-swing you need to write
import swing._
import Swing._
to have all the goodness like onEDT a...