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How to modify list entries during for loop?
...has resulted in errors in my code that I had to debug for a long period of time. Python Tutorial doesn't even mention it. Though there must be some reason to it?
– xji
Jan 29 '17 at 17:25
...
Cannot kill Python script with Ctrl-C
...eads are destroyed instantly. So let's keep the main thread alive:
import time
while True:
time.sleep(1)
Now it will keep print 'first' and 'second' until you hit Ctrl+C.
Edit: as commenters have pointed out, the daemon threads may not get a chance to clean up things like temporary files. If...
Perform commands over ssh with Python
...
As a long-time user of Paramiko (but not an expert), I can suggest using Paramiko but you should consider your use cases and how much you're willing to learn. Paramiko is very low-level, and you can easily fall into a trap where you cr...
Differences between socket.io and websockets
...ole.error('websocket connection');
for (var t = 0; t < 3; t++)
setTimeout(() => s.send('message from server', ()=>{}), 1000*t);
});
app.listen(3001, () => console.error('listening on http://localhost:3001/'));
console.error('websocket example');
Source: https://github.com/rsp/nod...
Passing references to pointers in C++
...nst& val)
{
// Do stuff to the string pointer
}
int main()
// sometime later
{
// ...
string s;
string* ps = &s;
myfunc( ps); // OK because ps is not a temporary
myfunc2( &s); // OK because the parameter is a const&
// ...
return 0;
}
...
Correctly determine if date string is a valid date in that format
...
You can use DateTime class for this purpose:
function validateDate($date, $format = 'Y-m-d')
{
$d = DateTime::createFromFormat($format, $date);
// The Y ( 4 digits year ) returns TRUE for any integer with any number of digits so cha...
How Do I Choose Between a Hash Table and a Trie (Prefix Tree)?
... extra overhead since it isn't stored as an array but that in terms of run time (assuming the longest key is the longest english word) it can be essentially O(1) (in relation to the upper bound). Maybe the longest english word is 50 characters?
...
Easily measure elapsed time
I am trying to use time() to measure various points of my program.
26 Answers
26
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How to find all occurrences of a substring?
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What will be the time complexity of using this method ?
– Pranjal Mittal
Jul 13 '17 at 23:50
2
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convert '1' to '0001' in JavaScript [duplicate]
...out using any 3rd party libraries. I have done this in php using spritf: $time = sprintf('%04.0f',$time_arr[$i]);
4 Answer...