John Zwinck

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John Zwinck has asked 124 questions and find answers to 916 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

Inconsistency in name lookup among different compilers
Executing shell commands in c++ with exec
How to avoid problematic/undefined behavior when locking NFS files on Linux?
Exception Safety: Strong Guarantee vs Basic Guarantee
My (simple) code links in g++, doesn't link in clang
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