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Local variables in nested functions
...rator the function would work (i.e. printing each value in turn), but when transforming to a list it runs over the generator, hence all calls to cage (cage.animal) return cats.
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How to iterate over rows in a DataFrame in Pandas
...ssle of cythonizing your code, and 3) you're trying to perform elementwise transformation on your code. There is a good amount of evidence to suggest that list comprehensions are sufficiently fast (and even sometimes faster) for many common Pandas tasks.
The formula is simple,
# Iterating over one c...
Sanitizing strings to make them URL and filename safe?
...this area. His phunction framework includes several great text filters and transformations.
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App Inventor 2 CustomWebView 拓展：高级版Web浏览器，完美浏览现代Web前...
... 组件无法正常浏览部分现代Web页面，无法浏览带端口url的页面，这款拓展统统解决。
.aix 拓展下载：
cn.fun123.CustomWebView.aix
基础使用方法：
例如，使用此拓展访问 react 写的网页，效果如下：
而使用原生的Web浏览器则...
Rails update_attributes without save?
...ccur when converting data from an API, or even just using a series of data transformation and forgetting to Hash[] the results of the final .map. Maintain some code 50 lines above and 3 functions removed from your attribute assignment, and you've got a recipe for failure.
The lesson with Rails 3 i...
Is it possible to decrypt MD5 hashes?
...hash function. Much of the original data is actually "lost" as part of the transformation.
Think about this: An MD5 is always 128 bits long. That means that there are 2128 possible MD5 hashes. That is a reasonably large number, and yet it is most definitely finite. And yet, there are an infinite n...
Using Java 8's Optional with Stream::flatMap
...ite up the above description of what it was doing. The key subtlety is the transformation from Optional<Other> to Optional<Stream<Other>>. Once you grok this it makes sense, but it wasn't obvious to me.
I'll acknowledge, though, that things that are initially obscure can become id...
Is module __file__ attribute absolute or relative?
...oo.py
Guido explains in the above cited thread, why python do not try to transform all entries in absolute paths:
we don't want to have to call getpwd() on every import ....
getpwd() is relatively slow and can sometimes fail outright,
So your path is used as it is.
...
Android list view inside a scroll view
...tViewHeightBasedOnChildren(ListView listView) {
// 获取ListView对应的Adapter
ListAdapter listAdapter = listView.getAdapter();
if (listAdapter == null) {
return;
}
int totalHeight = 0;
for (int i = 0, len = listAdapter.getCount(); i < len; i++) { // listAdapte...
Why hasn't functional programming taken over yet?
...ems are all about taking in raw information -- strings and metadata -- and transforming them into different strings and metadata. In situations where mutations occur, like someone is typing in the IDE, the problem space inherently lends itself to functional techniques such as incrementally rebuildin...