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MihailJP / complex.lua
Created Aug 28, 2012
Complex numbers for Lua
View complex.lua
--[[
--
-- *** Complex numbers for Lua ***
--
--]]
-- Module "cmath" ... mathematic functions for complex numbers
module("cmath", package.seeall)
View gist:3599125
v = "global"
do
print(v) -- "global"
local v = "local"
print(v) -- "local", of course
v = nil
print(v) -- nil, not "global"
collectgarbage("collect")
print(v) -- still nil
print (_G.v) -- of course "global"
@MihailJP
MihailJP / gist:3652275
Created Sep 6, 2012
Logical (not bitwise) XOR in C++
View gist:3652275
#include <iostream>
int main() {
int a = 1; int b = 2;
if ((bool)a != (bool)b)
std::cout << "a xor b -> true" << std::endl;
else
std::cout << "a xor b -> false" << std::endl;
return 0;
}
@MihailJP
MihailJP / fizzbuzz.hs
Created Sep 14, 2012
Fizz Buzz in Haskell
View fizzbuzz.hs
fizzbuzz = [f n | n <- [1..]]
where
f x
| x `mod` 15 == 0 = "Fizz Buzz"
| x `mod` 5 == 0 = "Buzz"
| x `mod` 3 == 0 = "Fizz"
| otherwise = show (fromIntegral x)
main = do print (take 60 fizzbuzz)
@MihailJP
MihailJP / test2038.c
Created Oct 8, 2012
Check if your time_t implementation will work after 2038
View test2038.c
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
int main () {
time_t time_num[5] = {(time_t)0x00000000, (time_t)0x7fffffff, (time_t)0x80000000, (time_t)0xffffffff,};
struct tm* parsed_time; unsigned int i;
printf("sizeof(time_t) is %d.\n", sizeof(time_t));
for (i = 0; i < 4; i++) {
parsed_time = gmtime(&(time_num[i]));
@MihailJP
MihailJP / d_copy.lua
Created Oct 22, 2012
Shallow- and deep-copy of table in Lua
View d_copy.lua
function clone (t) -- deep-copy a table
if type(t) ~= "table" then return t end
local meta = getmetatable(t)
local target = {}
for k, v in pairs(t) do
if type(v) == "table" then
target[k] = clone(v)
else
target[k] = v
end
@MihailJP
MihailJP / matrix.hpp
Created Oct 23, 2012
Matrix template (C++11 only!)
View matrix.hpp
#ifndef MATRIX_HPP
#define MATRIX_HPP
#include <array>
#include <initializer_list>
#define MTXTMP template <typename T, unsigned int rows, unsigned int cols>
/* Matrix class template */
MTXTMP class matrix {
@MihailJP
MihailJP / gist:4069788
Created Nov 14, 2012
Using wchar_t working with locale
View gist:4069788
#include <wchar.h>
#include <stdlib.h>
#include <locale.h>
int main() {
char* syslocale = getenv("LANG");
const wchar_t teststr[] =
L"僕と契約して、"
L"プログラマになってよ!";
setlocale(LC_ALL, syslocale);
@MihailJP
MihailJP / 1_wrong.cpp
Created Dec 7, 2012
You cannot override a class (static) constant
View 1_wrong.cpp
#include <iostream>
class Parent {
protected:
static const int val = 1;
public:
virtual int getval() {return val;}
};
class Child : public Parent {
@MihailJP
MihailJP / ConstTest1.java
Created Dec 7, 2012
You cannot override a class (static) constant (Java)
View ConstTest1.java
class Parent {
static final int Val = 1;
public int getval() {
return Val;
}
}
class Child extends Parent {
static final int Val = 2;
}