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C# Thread safe fast(est) counter
..." statement and its variable is directly incremented (x86) or "added" to (x64).
This "bus lock" statement locks the bus to prevent another CPU from accessing the bus while the calling CPU does its operation. Now, take a look at the C# lock() statement's IL. Here you will see calls to Monitor in...
IIS Express Immediately shutting-down running site after stopping web application
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64
Instead of hitting the (X) STOP button, you can use the Detach all menu item in the Debug menu....
Split comma-separated strings in a column into separate rows
...nfo()
#Session info
# version R version 3.3.2 (2016-10-31)
# system x86_64, mingw32
#Packages
# data.table * 1.10.4 2017-02-01 CRAN (R 3.3.2)
# dplyr 0.5.0 2016-06-24 CRAN (R 3.3.1)
# forcats 0.2.0 2017-01-23 CRAN (R 3.3.2)
# ggplot2 * 2.2.1 2016-12-30 CR...
Which characters need to be escaped when using Bash?
... - c 7D E \}
16 E $'\026' 30 - 0 4A - J 64 - d 7E E \~
17 E $'\027' 31 - 1 4B - K 65 - e 7F E $'\177'
18 E $'\030' 32 - 2 4C - L 66 - f
19 E $'\031' 33 - 3 4D - M 67 - g ...
The quest for the Excel custom function tooltip
...my Excel 2013 / Windows 8 machine. I've tested on one other configuration (64-bit Excel 2010 on Windows Server 2008) and had a serious problems.
For a C# function defined with the Excel-DNA attributes like this:
[ExcelFunction(Description =
"A useful test function that adds two numbers, and r...
python generator “send” function purpose?
...8
>>> c.next()
16
>>> c.next()
32
>>> c.send(8)
64
>>> c.send(8)
128
>>> c.send(8)
256
Now here is how you would do the same type of function using send, so on each iteration you can change the value of number:
def double_number(number):
while True...
General suggestions for debugging in R
...
Ari B. FriedmanAri B. Friedman
64.3k3131 gold badges164164 silver badges225225 bronze badges
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Calculate the median of a billion numbers
...e too long; a billion numbers is only 4 GB for 32-bit ints/floats, 8GB for 64-bit ints/doubles. Neither seems tremendously taxing.
– DrPizza
Aug 3 '15 at 6:01
13
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What is the most efficient string concatenation method in python?
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''.join(sequenceofstrings) is what usually works best -- simplest and fastest.
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Implementing slicing in __getitem__
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I have a "synthetic" list (one where the data is larger than you would want to create in memory...