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How to read a large file - line by line?
... f:
for line in f:
do something with data
2. use of yield
Sometimes one might want more fine-grained control over how much to read in each iteration. In that case use iter & yield. Note with this method one explicitly needs close the file at the end.
def readInChunks(fileObj, chunkS...
Why is printing to stdout so slow? Can it be sped up?
...ided to look into it and was quite surprised to find that almost all the time spent is waiting for the terminal to process the results.
...
Converting a UNIX Timestamp to Formatted Date String
Using PHP, I want to convert UNIX timestamps to date strings similar to this: 2008-07-17T09:24:17Z
9 Answers
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Is it worth using Python's re.compile?
...
I've had a lot of experience running a compiled regex 1000s of times versus compiling on-the-fly, and have not noticed any perceivable difference. Obviously, this is anecdotal, and certainly not a great argument against compiling, but I've found the difference to be negligible.
EDIT:
A...
Good example of livelock?
... we have here is a situation where both threads, if they enter at the same time will end up running in the inner loop without proceeding. Obviously this is a simplified example. A naiive fix would be to put some kind of randomness in the amount of time the threads would wait.
The proper fix is to a...
Convert UTC datetime string to local datetime
I've never had to convert time to and from UTC. Recently had a request to have my app be timezone aware, and I've been running myself in circles. Lots of information on converting local time to UTC, which I found fairly elementary (maybe I'm doing that wrong as well), but I can not find any informat...
How to format a duration in java? (e.g format H:MM:SS)
...ttern like H:MM:SS. The current utilities in java are designed to format a time but not a duration.
19 Answers
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Adding minutes to date time in PHP
I'm really stuck with adding X minutes to a datetime, after doing lots of google'ing and PHP manual reading, I don't seem to be getting anywhere.
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How do I convert seconds to hours, minutes and seconds?
...
You can use datetime.timedelta function:
>>> import datetime
>>> str(datetime.timedelta(seconds=666))
'0:11:06'
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What's the difference between dynamic (C# 4) and var?
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var is static typed - the compiler and runtime know the type - they just save you some typing... the following are 100% identical:
var s = "abc";
Console.WriteLine(s.Length);
and
string s = "abc";
Console.WriteLine(s.Length);
All that happened was that the comp...