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What is the difference between typeof and instanceof and when should one be used vs. the other?
..."function" object and instanceof will fail if you try to compare an object from another (i)frame/window. typeof will work in all cases since it returns the string "function".
– some
May 23 '09 at 16:56
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biggest integer that can be stored in a double
...iplied by 2exponent − 52. So with exponent 52 you can store all values from 252 through to 253 − 1. Then with exponent 53, the next number you can store after 253 is 253 + 1 × 253 − 52. So loss of precision first occurs with 253 + 1.
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How can I run PowerShell with the .NET 4 runtime?
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I figured out my problem from above. You have to put the config file in the 64-bit directory when running on a 64-bit OS. The 32-bit powershell executable seems to pick up the change just fine from there.
– Chris McKenzie
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How to debug a Flask app
...r=False), or point it at the venv/bin/flask script and use it as you would from the command line. You can leave the reloader disabled, but a reload will kill the debugging context and you will have to catch a breakpoint again.
You can also use pdb, pudb, or another terminal debugger by calling set_...
Python (and Python C API): __new__ versus __init__
...init__ reinitialises the object
[3, 4]
As to why they're separate (aside from simple historical reasons): __new__ methods require a bunch of boilerplate to get right (the initial object creation, and then remembering to return the object at the end). __init__ methods, by contrast, are dead simple,...
Why do people use __(double underscore) so much in C++
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From Programming in C++, Rules and Recommendations :
The use of two underscores (`__') in identifiers is reserved for the compiler's internal use according to the ANSI-C standard.
Underscores (`_') are often used in ...
PostgreSQL: Which Datatype should be used for Currency?
...it doesn't.
For a more official source, read this thread in pgsql-general (from just this week!), with statements from core developers including D'Arcy J.M. Cain (original author of the money type) and Tom Lane:
Related answer (and comments!) about improvements in recent releases:
Jasper Report: un...
Is there a constraint that restricts my generic method to numeric types?
...olation of the DRY principle. The DRY principle is there to prevent people from duplicating code in multiple places that would cause the application to become hard to maintain.
This is not at all the case here: if you want a change then you can just change the template (a single source for all your...
What is the best way to conditionally apply attributes in AngularJS?
...the attribute with its value bound to the result of the angular expression from the original attribute value.
– Matthias
Nov 18 '13 at 21:37
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os.walk without digging into directories below
...ory on or below the desired level is found, all of its subdirs are removed from the list of subdirs to search next. So they won't be "walked".
– nosklo
Aug 19 '10 at 19:41
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