Andrew Lazarus

Andrew Lazarus has asked 10 questions and find answers to 48 problems.

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About

Mathematician, programmer, polymath.

Andrew Lazarus questions

Macros to return defined(X) as true or false
Construct-in-place an unmoveable object in a map
Would std::count_if be faster without an if?
Can std::this_thread::sleep_for() have spurious wakeups?
Speed of bound lambda (via std::function) vs operator() of functor struct
Can a C++ lambda constructor argument capture the constructed variable?
target_link_libraries and add_dependencies

Andrew Lazarus answers

sql select with argument which can be NULL
How to create Java Map of fixed-length array values?
Should i avoid using STATIC vaiables
How can I improve this SQL query?
Looking for a query to display nodes in the same level only
Why C++ copy constructor must use const object?
Large performance difference: Using sysdate vs using pre-formatted date
Add PostgreSQL column constraint based on value in other column(s)
What will be the SQL query for this problem?
Why the digits after decimal are all zero?