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Do I have to Close() a SQLConnection before it gets disposed?
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109
Since you have a using block, the Dispose method of the SQLCommand will be called and it will ...
Reading a huge .csv file
...in Python 2.7 with up to 1 million rows, and 200 columns (files range from 100mb to 1.6gb). I can do this (very slowly) for the files with under 300,000 rows, but once I go above that I get memory errors. My code looks like this:
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Passing parameters to a Bash function
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10
@TerryGardner, consider that your attempts to increase clarity are reducing compatibility.
– Charles Duffy
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Export specific rows from a PostgreSQL table as INSERT SQL script
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edited Dec 28 '18 at 10:39
Abdellah Alaoui
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a...
Create a menu Bar in WPF?
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Jonathon Reinhart
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answered Mar 30 '12 at 3:56
iondenionden
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How to convert An NSInteger to an int?
... cast the NSUInteger or NSInteger to an int:
int i = -1;
NSUInteger row = 100;
i > row // true, since the signed int is implicitly converted to an unsigned int
i > (int)row // false
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error LNK2019: 无法解析的外部符号 __imp__PlaySoundW@12，该符号在函数 \...
error LNK2019: 无法解析的外部符号 __imp__PlaySoundW@12，该符号在函数 "long __stdcall WndProc(struct HWND__ *,unsigned int,unsigned int,long)" (?WndProc@@YGJPAUHWND__@@IIJ@Z) 中被引用#include <mmsystem.h>#pragma comment(lib, "WINMM.LIB")
#include <mmsystem.h>
#pragma comm...
Python: How do I make a subclass from a superclass?
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# Initialize using Parent
#
class MySubClass(MySuperClass):
def __init__(self):
MySuperClass.__init__(self)
Or, even better, the use of Python's built-in function, super() (see the Python 2/Python 3 documentation for it) may be a slightly better method of calling the parent for ...
Finding a substring within a list in Python [duplicate]
...ut consider this example:
import timeit
mylist = ['abc123'] + ['xyz123']*1000
sub = 'abc'
timeit.timeit('[s for s in mylist if sub in s]', setup='from __main__ import mylist, sub', number=100000)
# for me 7.949463844299316 with Python 2.7, 8.568840944994008 with Python 3.4
timeit.timeit('next((s ...
How to tell if a tag failed to load
...iodeus - James MacFarlaneDiodeus - James MacFarlane
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