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How can I create a two dimensional array in JavaScript?
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edited Aug 14 '19 at 6:32
Adam
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answered Jun 8...
Is there a portable way to get the current username in Python?
...
32
On linux, getlogin() returns the name of the "user logged in on the controlling terminal of the process." It therefore fails when there is...
What is a NullReferenceException, and how do I fix it?
...t value when a null is encountered:
IService CreateService(ILogger log, Int32? frobPowerLevel)
{
var serviceImpl = new MyService(log ?? NullLog.Instance);
// Note that the above "GetValueOrDefault()" can also be rewritten to use
// the coalesce operator:
serviceImpl.FrobPowerLevel = fr...
What does Expression.Quote() do that Expression.Constant() can’t already do?
...sure induced, if you do this you'll get a "variable 's' of type 'System.Int32' is not defined" exception on the invocation.
(Aside: I've just reviewed the code generator for delegate creation from quoted expression trees, and unfortunately a comment that I put into the code back in 2006 is still ...
filter for complete cases in data.frame using dplyr (case-wise deletion)
... %>% filter(complete.cases(.))
or this:
library(tidyr)
df %>% drop_na
If you want to filter based on one variable's missingness, use a conditional:
df %>% filter(!is.na(x1))
or
df %>% drop_na(x1)
Other answers indicate that of the solutions above na.omit is much slower but tha...
How to resize an image with OpenCV2.0 and Python2.6
...lf ?
– user4772964
Apr 22 '15 at 16:32
8
Yes, you can't reduce the size of the image without losi...
Typedef function pointer?
...p;square.
– pranavk
Mar 5 '13 at 13:32
2
Question, in your first typedef example you have of the ...
Inserting data into a temporary table
...SERT INTO #TempTable (ID, Date, Name)
SELECT id, date, name
FROM physical_table
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Evaluating a mathematical expression in a string
...I've rewrapped fourFn into a numeric parser class for easier reuse.
from __future__ import division
from pyparsing import (Literal, CaselessLiteral, Word, Combine, Group, Optional,
ZeroOrMore, Forward, nums, alphas, oneOf)
import math
import operator
__author__ = 'Paul McGu...
How to generate a random number in C++?
...d
(assuming rand() itself is uniformly distributed from 0 to RAND_MAX) */
while( ( n = rand() ) > RAND_MAX - (RAND_MAX-5)%6 )
{ /* bad value retrieved so get next one */ }
printf( "%d,\t%d\n", n, n % 6 + 1 );
}
return 0;
}
^^^ THAT sequence from a sing...