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How to get current timestamp in milliseconds since 1970 just the way Java gets
...e <chrono>
#include <iostream>
int main() {
unsigned __int64 now = std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::system_clock::now().time_since_epoch()).count();
std::cout << now << std::endl;
return 0;
}
...
Why would you use an ivar?
..., gender (enum), and age (unsigned) of its owner, as well as a balance (int64_t). An account object has an init method and a compare: method. The compare: method is defined as: Female orders before male, names order alphabetically, young orders before old, balance orders low to high.
Actually there...
What is the string length of a GUID?
...ore it as uniqueidentifier - this is then fully indexable, etc. at the database. The next-best option would be a binary(16) column: standard GUIDs are exactly 16 bytes in length.
If you must store it as a string, the length really comes down to how you choose to encode it. As hex (AKA base-16 encod...
What's the difference between `1L` and `1`?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How Big can a Python List Get?
...o Justen's answer indicates) that on other machines, notably those running 64-bit systems, the value of PY_SSIZE_T_MAX can very greatly.
– ClydeTheGhost
Aug 8 '16 at 18:46
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How to concatenate a std::string and an int?
I thought this would be really simple but it's presenting some difficulties. If I have
23 Answers
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How do I make JavaScript beep?
...
Solution
You can now use base64 files to produce sounds when imported as data URI. The solution is almost the same as the previous ones, except you do not need to import an external audio file.
function beep() {
var snd = new Audio("data:audio/w...
Extracting bits with a single multiplication
... Let's re-state the problem being asked as a theorem:
"There exists some 64-bit constants 'mask' and 'multiplicand' such that, for all 64-bit bitvectors x, in the expression y = (x & mask) * multiplicand, we have that y.63 == x.63, y.62 == x.55, y.61 == x.47, etc."
If this sentence is in fact...
How does java do modulus calculations with negative numbers?
Am I doing modulus wrong? Because in Java -13 % 64 is supposed to evaluate to -13 but I get 51 .
14 Answers
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Error to install Nokogiri on OSX 10.9 Maverick?
...-I/Users/ericcamalionte/.rvm/rubies/ruby-1.9.2-p320/include/ruby-1.9.1/x86_64-darwin11.4.0 -I/Users/ericcamalionte/.rvm/rubies/ruby-1.9.2-p320/include/ruby-1.9.1/ruby/backward -I/Users/ericcamalionte/.rvm/rubies/ruby-1.9.2-p320/include/ruby-1.9.1 -I. -I/usr/local/Cellar/libxslt/1.1.28/include -I/usr...