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switch() statement usage
...ue again. It seems switch is generally faster than if statements.
So that, and the fact that the code is shorter/neater with a switch statement leans in favor of switch:
# Simplified to only measure the overhead of switch vs if
test1 <- function(type) {
switch(type,
mean = 1,
m...
The way to check a HDFS directory's size?
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Prior to 0.20.203, and officially deprecated in 2.6.0:
hadoop fs -dus [directory]
Since 0.20.203 (dead link) 1.0.4 and still compatible through 2.6.0:
hdfs dfs -du [-s] [-h] URI [URI …]
You can also run hadoop fs -help for more info and...
How to create a DataTable in C# and how to add rows?
... DataView with filter other than CurrentRows.
– Salamander2007
Jun 25 '09 at 7:44
@phoenix: I just wanted the question...
Why use strong named assemblies?
...rivate keys are in the public git repos (as per Microsoft recommendations) and available to anyone who wants them.
– trampster
Jan 18 '18 at 20:52
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Async image loading from url inside a UITableView cell - image changes to wrong image while scrollin
...oll the table the images will change a few times until the scroll will end and the image will go back to the right image. I have no idea why this is happening.
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Javascript communication between browser tabs/windows [duplicate]
... example, when Tab 2 starts audio playback, Tab 1 somehow knows about this and can pause it's player.
10 Answers
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How to properly exit a C# application?
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Application.Exit
Informs all message pumps that they must terminate, and then closes all application windows after the messages have been processed. This is the code to use if you are have called Application.Run (WinForms applications), this method stops all running message loops on all thread...
How do you make a LinearLayout scrollable?
I have lot of items on the screen and I need to use the scrollbar so the user can scroll down. However, the scroll is either not visible or it's not working. How is it possible to add a scrollbar to a LinearLayout ?
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Can you detect “dragging” in jQuery?
...drags on the "a" element. Just look for a certain amount of change in an x and y mousemove event.
– Ash Blue
May 21 '14 at 23:45
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What is the difference between 'log' and 'symlog'?
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I finally found some time to do some experiments in order to understand the difference between them. Here's what I discovered:
log only allows positive values, and lets you choose how to handle negative ones (mask or clip).
symlog means symmetrical log, and allows positive and negative valu...