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How to install PyQt4 on Windows using pip?
...n 3.5, etc.
Since Qt is a more complicated system with a compiled C++ codebase underlying the python interface it provides you, it can be more complex to build than just a pure python code package, which means it can be hard to install it from source.
Make sure you grab the correct Windows wheel f...
Accessing nested JavaScript objects and arays by string path
...
I just made this based on some similar code I already had, it appears to work:
Object.byString = function(o, s) {
s = s.replace(/\[(\w+)\]/g, '.$1'); // convert indexes to properties
s = s.replace(/^\./, ''); // strip a lea...
App Inventor 2 DynamicComponents 拓展：动态创建AI2组件对象 · App Inventor 2 中文网
...n”（同步）之间进行选择。
案例
该demo实现了动态添加一行布局，布局中有一个标签和一个按钮，点击按钮响应事件，还可以动态删除一行布局，截图如下：
代码块如下：
源码下载：
dynamic_component_demo...
How to JSON serialize sets?
...de disappeared
updated the call to the parents' default with super()
using base64 to serialize the bytes type into str (because it seems that bytes in python 3 can't be converted to JSON)
from decimal import Decimal
from base64 import b64encode, b64decode
from json import dumps, loads, JSONEncoder...
How to read a single character from the user?
...
Also worth trying is the readchar library, which is in part based on the ActiveState recipe mentioned in other answers.
Installation:
pip install readchar
Usage:
import readchar
print("Reading a char:")
print(repr(readchar.readchar()))
print("Reading a key:")
print(repr(readchar....
Convert string to integer type in Go?
...d strconv.ParseInt() which give greater flexibility as you can specify the base and bitsize for example. Also as noted in the documentation of strconv.Atoi():
Atoi is equivalent to ParseInt(s, 10, 0), converted to type int.
Here's an example using the mentioned functions (try it on the Go Play...
Understanding CUDA grid dimensions, block dimensions and threads organization (simple explanation) [
...ronize all threads is a nuisance for CUDA learners. So I updated my answer based on the information you gave me. I really appreciate it.
– Bizhan
May 13 at 17:49
...
Why is Go so slow (compared to Java)?
...these and found them to be mostly OK. I think the results can be used as a base for estimations.
– Agoston Horvath
Apr 7 '16 at 15:11
...
How does one generate a random number in Apple's Swift language?
...
Edit: Updated for Swift 3.0
arc4random works well in Swift, but the base functions are limited to 32-bit integer types (Int is 64-bit on iPhone 5S and modern Macs). Here's a generic function for a random number of a type expressible by an integer literal:
public func arc4random<T: Express...
How to get the list of all printers in computer
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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