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[since C++11] std::array的使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
[since C++11] std::array的使用learning-using-cpp11-stl-array 前言本文总结了STL中的序列式容器array的用法及注意事项。array的出现代表着C++的代码更进一步现代化，就像std::string的出现代替了c风格字符串并且能和STL配合工作一样，array的 #...
What does axis in pandas mean?
...removing columns. If you specify axis=0 you will be removing rows from dataset. So if we have some pandas dataframe in variable df: df.drop(0, axis=0) will remove the whole first row of dataset df.drop('grades', axis=1) will remove column 'grades' from dataset Hope this clarifies it little bit more....
How exactly does the python any() function work?
... editor after snippets, if snippets enabled
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Calling startActivity() from outside of an Activity context
...resort,
add - FLAG_ACTIVITY_NEW_TASK flag to your intent:
_
myIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
Edit - i would avoid setting flags as it will interfere with normal flow of event and history stack.
share...
How to declare an array in Python?
...
variable = []
Now variable refers to an empty list*.
Of course this is an assignment, not a declaration. There's no way to say in Python "this variable should never refer to anything other than a list", since Python is dynamically typed.
*The default...
Hash Map in Python
I want to implement a HashMap in Python. I want to ask a user for an input. depending on his input I am retrieving some information from the HashMap. If the user enters a key of the HashMap, I would like to retrieve the corresponding value.
...
List of zeros in python [duplicate]
How can I create a list which contains only zeros? I want to be able to create a zeros list for each int in range(10)
...
Git Blame Commit Statistics
...t this into its own command:
#!/bin/bash
# save as i.e.: git-authors and set the executable flag
git ls-tree -r -z --name-only HEAD -- $1 | xargs -0 -n1 git blame \
--line-porcelain HEAD |grep "^author "|sort|uniq -c|sort -nr
store this somewhere in your path or modify your path and use it lik...
Stock ticker symbol lookup API [closed]
...like this in return:
YAHOO.Finance.SymbolSuggest.ssCallback(
{
"ResultSet": {
"Query": "ya",
"Result": [
{
"symbol": "YHOO",
"name": "Yahoo! Inc.",
"exch": "NMS",
"type": "S",
"exchDisp":...
Why aren't variables declared in “try” in scope in “catch” or “finally”?
...erlying code generated when you compile your C#. The scope isn't just hard-set in the C# spec, it's in the CLR and CLS spec as well.
The scope protects you, but you do occasionally have to work around it. Over time, you get used to it, and it begins to feel natural. Like everyone else said, what h...