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What are free monads?
...ll x) = Roll (fmap (fmap f) x)
--this is the same thing as (++) basically
concatFree :: Functor f => Free f (Free f a) -> Free f a
concatFree (Pure x) = x
concatFree (Roll y) = Roll (fmap concatFree y)
instance Functor f => Monad (Free f) where
return = Pure -- just like []
x >>...
How do shift operators work in Java? [duplicate]
...ts so that the value can be used as an index into the array of hexadecimal characters.
// Masking sign extension.
class HexByte {
static public void main(String args[]) {
char hex[] = {
'0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
};
byte b ...
@try - catch block in Objective-C
...
All work perfectly :)
NSString *test = @"test";
unichar a;
int index = 5;
@try {
a = [test characterAtIndex:index];
}
@catch (NSException *exception) {
NSLog(@"%@", exception.reason);
NSLog(@"Char at index %d cannot be found", index);
NSLog(@"Max inde...
How can I break up this long line in Python?
...formatting a long line such as this? I'd like to get it to no more than 80 characters wide:
5 Answers
...
How to disable anchor “jump” when loading a page?
...identical to tab names/href values) to my nav links. I ended up adding a 1-char suffix to my tabs, and then substringing the values by 1 char (str.slice(0,-1) when comparing them to window.location.hash This way the hashes are different and no jumping occurs.
– developer10
...
How to add leading zeros?
...
Note that sprintf converts numeric to string (character).
– aL3xa
Apr 28 '11 at 8:54
Than...
How can I echo a newline in a batch file?
...
@quetzalcoatl, it gets even stranger. Other characters besides dot work too. SS64 says better syntax is echo( for improved performance (still with no space mind you). Extended discussion of other characters and their merits/flaws at ECHO. FAILS to give text or blank ...
Add … if string is too long PHP [duplicate]
...lay the whole field, but on the other, I just want to display the first 50 characters. If the string in the description field is less than 50 characters, then it won't show ... , but if it isn't, I will show ... after the first 50 characters.
...
What are copy elision and return value optimization?
...;iostream>
using namespace std;
class ABC
{
public:
const char *a;
ABC()
{ cout<<"Constructor"<<endl; }
ABC(const char *ptr)
{ cout<<"Constructor"<<endl; }
ABC(ABC &obj)
{ cout<<"copy constructor"<<endl;...
In-memory size of a Python structure
...
@AlexMartelli Hi Alex! .. Why minimum size of a char in python is 25 bytes. >>> getsizeof('a') gives 25 and >>> getsizeof('ab') gives 26 `
– Grijesh Chauhan
Jan 17 '13 at 5:13
...