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What exactly is Python's file.flush() doing?
...rs created by the runtime/library/language that you're programming against and is meant to speed things up by avoiding system calls for every write. Instead, when you write to a file object, you write into its buffer, and whenever the buffer fills up, the data is written to the actual file using sys...
Swift - which types to use? NSString or String
...wift type, as in str.bridgeToObjectiveC().length for example. You can also cast a String to an NSString by using str as NSString.
However, the necessity for these techniques to explicitly use the Foundation types, or at least some of them, may be obsolete in the future, since from what is stated in...
How to read a file in reverse order?
... line in reversed(open("filename").readlines()):
print line.rstrip()
And in Python 3:
for line in reversed(list(open("filename"))):
print(line.rstrip())
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Easy way to turn JavaScript array into comma-separated list?
... To get CSV of an array we can just use console.log(arr) or like you said, casting it as string automatically makes it CSV.
– sanpat
Aug 17 at 19:44
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Cannot install Lxml on Mac os x 10.9
...
You should install or upgrade the commandline tool for xcode.
Try this in a terminal:
xcode-select --install
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Disable output buffering
...
# reopen stdout file descriptor with write mode
# and 0 as the buffer size (unbuffered)
import io, os, sys
try:
# Python 3, open as binary, then wrap in a TextIOWrapper with write-through.
sys.stdout = io.TextIOWrapper(open(sys.stdout.fileno(), 'wb', 0), write_throug...
Java rounding up to an int using Math.ceil
...re only correct for integer division not for long division when values are casted to doubles. Counter examples are 4611686018427386880 / 4611686018427387137 fails on floor and 4611686018427386881 / 4611686018427386880 fails on ceil
– Wouter
Jul 11 '16 at 12:20
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Get last n lines of a file, similar to tail
I'm writing a log file viewer for a web application and for that I want to paginate through the lines of the log file. The items in the file are line based with the newest item on the bottom.
...
Exit codes in Python
...ode.
It's fairly likely that the script is never calling the exit method, and that 0 is the default exit code.
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Negation in Python
...an simply use os.mkdir() to get the result you need, with added exception handling goodness.
Example:
blues_sounds_path = "/usr/share/sounds/blues"
if not os.path.exists(blues_sounds_path):
try:
os.mkdir(blues_sounds_path)
except OSError:
# Handle the case where the directo...