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Why (0-6) is -6 = False? [duplicate]
...is. For instance, PyPy implemented the id of integer to return itself, so (0-6) is -6 is always true even if they are "different objects" internally; it also allows you to configure whether to enable this integer caching, and even set the lower and upper bounds. But in general, objects retrieved fro...
GetType() can lie?
...dFoo foo = new BadFoo();
Console.WriteLine("n1 and n2 are the same type: {0}",
Object.ReferenceEquals(n1.GetType(), foo.GetType()));
// output:
// n1 and n2 are the same type: True
so, yikes, you've successfully lied, right?
Well, yes and no... Consider that using this as an e...
Print function log /stack trace for entire program using firebug
...lpful.
– Ravi Teja
Apr 4 '17 at 11:30
✚1 console.warn('[WARN] CALL STACK:', new Error().stack);
...
How to check if there exists a process with a given pid in Python?
...
Sending signal 0 to a pid will raise an OSError exception if the pid is not running, and do nothing otherwise.
import os
def check_pid(pid):
""" Check For the existence of a unix pid. """
try:
os.kill(pid, 0)
e...
Python `if x is not None` or `if not x is None`?
...
1029
There's no performance difference, as they compile to the same bytecode:
Python 2.6.2 (r262:7...
How do you access a website running on localhost from iPhone browser
...ess network. How do I access localhost from the iPhone? Right now I get a 404 error.
26 Answers
...
How to add multiple columns to a table in Postgres?
...
answered Mar 10 '11 at 14:15
Erkan HaspulatErkan Haspulat
10.1k66 gold badges3737 silver badges4545 bronze badges
...
How can one see content of stack with GDB?
...
70
Use:
bt - backtrace: show stack functions and args
info frame - show stack start/end/args/loca...
Margin while printing html page
...iour, the user must select 'Print preview' and then set the print size to 100% (default is Shrink To Fit).
A better option for full control on printed margins is to use the @page directive to set the paper margin, which will affect the margin on paper outside the html body element, which is normal...
Does .NET have a way to check if List a contains all items in List b?
...
answered Oct 5 '09 at 15:06
Jon SkeetJon Skeet
1211k772772 gold badges85588558 silver badges88218821 bronze badges
...
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