John Zwinck

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John Zwinck has asked 124 questions and find answers to 911 problems.

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John Zwinck questions

LuaSocket FTP always times out
Rcpp: how to keep files generated by sourceCpp?
GCC 8 fails to compile make_shared<volatile int>()
Pandas: how to add missing columns to a DataFrame when assigning Series as row
Boost Intrusive unordered_set broken in 1.48 with GCC in C++11 mode
Is C scanf() prohibited from checking that integers are in range?
Is GCC miscompiling this code, or is it UB?
rPython installation fails, libpython not in linker paths
Python doctest hangs using ProcessPoolExecutor
Why do std::pair<long, long> and std::tuple<long, long> generate different code [duplicate]

John Zwinck answers

Is there any technical reason why throughput would significantly differ between an Java application and a C++ application?
A few doubts about char and int pointers in C
scanf() only reading first input (number)
Max and Min values within pandas (sub)Dataframe
Unlike STL and std::basic_string, why there is no default allocator for std::function
Using the newline character to break a loop in c++
Calling new in a constexpr function
Check if file exists using full paths and wildcard for filename bash
How to add a value to a vector of arrays?
Why is npm's name not Node Package Manager?