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python multithreading wait till all threads finished
...t1.join()
t2.join()
t3.join()
Thus the main thread will wait till t1, t2 and t3 finish execution.
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How can I delete the current line in Emacs?
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If you want to delete a number of whole lines, you can prefix the command with a number:
C-u 5 C-S-backspace # deletes 5 whole lines
M-5 C-S-backspace # deletes 5 whole lines
C-u C-S-backspace # delete 4 whole lines. C-u without a number defaults to 4
C-u -5 C-S-backspace # de...
Do Git tags only apply to the current branch?
...st recent commit of the branch you are currently on. You can change branch and create a tag there.
You can also just refer to the other branch while tagging,
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which will create the tag to the most recent commit of the other branch.
Or you can just put the tag an...
Python: Select subset from list based on index set
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@PreludeAndFugue: If there are two equivalent options it's good to know which one is faster, and use that one right away.
– fuenfundachtzig
Jul 5 '10 at 11:42
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How to find Unused Amazon EC2 Security groups
...'m try to find a way to determine orphan security groups so I can clean up and get rid of them. Does anyone know of a way to discover unused security groups.
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How do I check if file exists in Makefile so I can delete it?
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Helps to also understand what $(wildcard pattern) actually does. See link.
– Dr. Dan
Nov 5 '18 at 22:43
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Commenting multiple lines in DOS batch file
... DOS Batch file. To test this batch file I need to execute some lines only and want to hide/comment out remaining.
7 Answer...
Batch not-equal (inequality) operator
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this requires command extensions to be turned on (They are by default on 2000+ but can be turned off system wide or as a parameter to cmd.exe) Normally you should turn them on with setlocal, but for a simple if not equal test, just use "if not...
T-SQL: Using a CASE in an UPDATE statement to update certain columns depending on a condition
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I know this is a very old question and the problem is marked as fixed. However, if someone with a case like mine where the table have trigger for data logging on update events, this will cause problem. Both the columns will get the update and log will make use...
Difference between UIViewContentModeScaleAspectFit and UIViewContentModeScaleToFill?
what is the difference between UIViewContentModeScaleAspectFit and UIViewContentModeScaleToFill ...?
3 Answers
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