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How do I manipulate a variable whose name conflicts with PDB commands?
My code is, for better or worse, rife with single letter variables (it's physics stuff, so those letters are meaningful), as well as NumPy's, which I'm often interacting with.
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How to randomize (or permute) a dataframe rowwise and columnwise?
... replace=FALSE (the default) to sample(...) ensures that sampling is done without replacement which accomplishes a row wise shuffle.
Shuffle column-wise:
> df3 <- df1[,sample(ncol(df1))]
> df3
c a b
1 0 1 1
2 0 1 0
3 0 0 1
4 0 0 0
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Get the Row(s) which have the max count in groups using groupby
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edited Mar 29 '13 at 15:42
answered Mar 29 '13 at 15:09
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log4j logging hierarchy order
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edited Jun 4 '18 at 14:08
answered May 11 '16 at 15:28
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App Inventor 2 能否实现后台推送通知？源码级深度调研 - App应用开发 - 清...
... Cloud Messaging）集成
1. 没有 FCM 扩展组件：搜索了整个 MIT 源码仓库和 GitHub，没有发现 AI2 的 FCM 扩展。MIT 官方扩展库（mit-cml.github.io/extensions/）也没有推送相关扩展。
2. 构建系统支持但无组件使用：AI2 有 @UsesServices 和 @UsesBr...
Java variable number or arguments for a method
Is it possible to declare a method that will allow a variable number of parameters ?
6 Answers
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Changing API level Android Studio
...SDK version in Android Studio from API 12 to API 14. I have tried changing it in the manifest file, i.e.,
14 Answers
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How do I update an NPM module that I published?
I created a NPM module and I published it at version 0.0.1
5 Answers
5
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C++ sorting and keeping track of indexes
...lt;vector>
#include <numeric> // std::iota
#include <algorithm> // std::sort, std::stable_sort
using namespace std;
template <typename T>
vector<size_t> sort_indexes(const vector<T> &v) {
// initialize original index locations
vector<size_t> ...
Sending “User-agent” using Requests library in Python
...t" while requesting a webpage using Python Requests. I am not sure is if it is okay to send this as a part of the header, as in the code below:
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