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Is this a “good enough” random algorithm; why isn't it used if it's faster?
...have distinctly un-uniform output.
Inspired by this article about how bad php's rand() function is, I made some random matrix images using QuickRandom and System.Random. This run shows how sometimes the seed can have a bad effect (in this case favouring lower numbers) where as System.Random is pret...
Django - filtering on foreign key properties
...ects.filter(
desc__contains=filter,
project__name__contains="Foo").order_by("desc")
The Django Many-to-one documentation has this and other examples of following Foreign Keys using the Model API.
share
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Why does Windows64 use a different calling convention from all other OSes on x86-64?
...U/x86/X77_0060_mod_reg_r_m_byte.htm), register numbers 0...7 are - in that order - ?AX, ?CX, ?DX, ?BX, ?SP, ?BP, ?SI, ?DI.
Hence choosing A/C/D (regs 0..2) for return value and the first two arguments (which is the "classical" 32bit __fastcall convention) is a logical choice. As far as going to 64bi...
Paste multiple columns together
...e matrix conversion. Also, instead a for loop we could just use setdiff in order to remove unwanted columns
cols <- c('b','c','d')
data$x <- Reduce(function(...) paste(..., sep = "-"), data[cols])
data[setdiff(names(data), cols)]
# a x
# 1 1 a-d-g
# 2 2 b-e-h
# 3 3 c-f-i
Alternative...
Can you create nested WITH clauses for Common Table Expressions?
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These answers are pretty good, but as far as getting the items to order properly, you'd be better off looking at this article
http://dataeducation.com/dr-output-or-how-i-learned-to-stop-worrying-and-love-the-merge
Here's an example of his query.
WITH paths AS (
SELECT
Employ...
What is in your .vimrc? [closed]
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Refer to this script (vim.org/scripts/script.php?script_id=1349) to get the available colors. May need to turn on 256 color support for vim to get a wider variety.
– Brian Wigginton
Dec 13 '10 at 6:33
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A JRE or JDK must be available in order to run Eclipse. No JVM was found after searching the followi
Eclipse is unable to open, have used eclipse before and has open before without a problem. Now I keep getting the following error message:
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Python pandas: fill a dataframe row by row
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How do you run your own code alongside Tkinter's event loop?
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How do you get a list of the names of all files present in a directory in Node.js?
... @user3705055 unless you're using gulp to read in a directory of source order dependant files and compile them into a single executable.
– r3wt
Apr 7 '16 at 20:59
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