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In Python, how do I determine if an object is iterable?
...pproach:
from collections.abc import Iterable # drop `.abc` with Python 2.7 or lower
def iterable(obj):
return isinstance(obj, Iterable)
The above has been recommended already earlier, but the general consensus has been that using iter() would be better:
def iterable(obj):
try:
...
App Inventor 2 低功耗蓝牙 BlueToothLE 拓展 · App Inventor 2 中文网
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App Inventor 2 低功耗蓝牙 BlueToothLE ...
Algorithm to compare two images
...the copy may do stuff like rotating, making negative, or adding trivial details (as well as changing the dimension of the image).
...
Asking the user for input until they give a valid response
...ses the likelihood of bugs in your system. What if you want to backport to 2.7 by changing input to raw_input, but accidentally change only the first input above? It's a SyntaxError just waiting to happen.
Recursion Will Blow Your Stack
If you've just learned about recursion, you might be tempted ...
Is the Scala 2.8 collections library a case of “the longest suicide note in history”? [closed]
...coming in the imminent 2.8 release. Those familiar with the library from 2.7 will notice that the library, from a usage perspective, has changed little. For example...
...
What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?
...m what I can say with my puny test cases, you are 82% mainstream
clang 2.7@x86_64-suse-linux
We like to think that:
..05 int has the size of pointers
but 'sizeof(int)==sizeof(void*)' is false.
..08 overshifting is okay
but '(1<<bits_per_int)==0' is false.
..09a minus shifts backwards
but ...
深入理解 x86/x64 的中断体系 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...s 7 x64 系统上全部都使用 interrupt gate 并没有使用 trap gate
2.7 使用 trap gate
trap gate 在结构上与 interrupt gate 是完全一样的，参见节 2.6 的那图，trap gate 与 interrupt gate 不同的一点是：使用 trap gate 的，processor 进入 interrupt handler 前并...
How to decide between MonoTouch and Objective-C? [closed]
...I have a decent little app going that, once compressed, gets down to about 2.7 MB (when submitting your app for distribution, you zip it - when apps are downloaded from the store, they're zipped - so when figuring out if your app is going to come in under the 10MB OTA limit, zip the sucker first - y...
How to convert number to words in java
..." ");
}
/**
* testing
* @param args
*/
public static void main(String[] args) {
System.out.println("*** " + EnglishNumberToWords.convert(0));
System.out.println("*** " + EnglishNumberToWords.convert(1));
System.out.println("*** " + EnglishNumberToWords.convert(16));
S...
Bomb dropping algorithm
...g layer 1, because the
"blast radius" you get from doing so is always contained within the blast radius of
another square from layer 2. You should be able to easily convince yourself of this.
So, we can reduce the problem to finding an optimal way to bomb away the perimeter, then we can repeat t...