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Is unsigned integer subtraction defined behavior?
...he result of the addition is unsigned int. Then that result is implicitly converted to the type required in context, a conversion which fails because the value is not representable in the new type.
– Ben Voigt
Oct 14 '15 at 3:20
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Why do Python's math.ceil() and math.floor() operations return floats instead of integers?
...vident in your comment:
The whole point of ceil/floor operations is to convert floats to integers!
The point of the ceil and floor operations is to round floating-point data to integral values. Not to do a type conversion. Users who need to get integer values can do an explicit conversion fo...
Sort a single String in Java
...
No there is no built-in String method. You can convert it to a char array, sort it using Arrays.sort and convert that back into a String.
String test= "edcba";
char[] ar = test.toCharArray();
Arrays.sort(ar);
String sorted = String.valueOf(ar);
Or, when you want to dea...
Timeout on a function call
...dless of the Python version:
from __future__ import print_function
import sys
import threading
from time import sleep
try:
import thread
except ImportError:
import _thread as thread
Use version independent code:
try:
range, _print = xrange, print
def print(*args, **kwargs):
...
How to use PyCharm to debug Scrapy projects
... so accept spider name as an argument of your run config. Then import sys spider = sys.argv[1] cmdline.execute("scrapy crawl {}".format(spider).split())
– miguelfg
Oct 1 '17 at 20:47
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Difference between java.util.Random and java.security.SecureRandom
....util.Random source code (JDK 7u2), from a comment on the method protected int next(int bits), which is the one that generates the random values:
This is a linear congruential pseudorandom number generator, as
defined by D. H. Lehmer and described by Donald E. Knuth in
The Art of Compute...
Why is list initialization (using curly braces) better than the alternatives?
...on does not allow narrowing (§iso.8.5.4). That is:
An integer cannot be converted to another integer that cannot hold its value. For example, char
to int is allowed, but not int to char.
A floating-point value cannot be converted to another floating-point type that cannot hold its
value. For exam...
import module from string variable
... globals()[module] = module_obj
except ImportError:
sys.stderr.write("ERROR: missing python module: " + module + "\n")
sys.exit(1)
and yes, for python 2.7> you have other options - but for 2.6<, this works.
...
Java: How to convert List to Map
... have conversation with a colleague about what would be the optimal way to convert List to Map in Java and if there any specific benefits of doing so.
...
How to convert/parse from String to char in java?
...
If your string contains exactly one character the simplest way to convert it to a character is probably to call the charAt method:
char c = s.charAt(0);
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