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How to generate all permutations of a list?
....permutations([1,2,3], r=2), which will generate all possible permutations selecting 2 elements: [(1, 2), (1, 3), (2, 1), (2, 3), (3, 1), (3, 2)]
– toto_tico
Aug 24 '17 at 8:49
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What is the tilde (~) in the enum definition?
...he UI
[] Cash
[] Check
[] CreditCard
and sum their values, and the user selects them all, you would see All in the resulting enum.
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com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
...Shouldn't the threads in the connection pool be kept active by firing the "select 1" validation query? Why would they get closed by prolonged inactivity when we have set the evictor to run at shorter time intervals than the mysql server timeout?
– Farhad
Sep 2 ...
Use ffmpeg to add text subtitles [closed]
...r input: -i input2.srt. Second, map that as 2nd stream: -map 2:0. Finally, select encoder for 2nd subtitle stream (the same as the first one): -c:s srt. The complete example\ ffmpeg -i input.mp4 -f srt -i input.srt -i input2.srt\ -map 0:0 -map 0:1 -map 1:0 -map 2:0 -c:v copy -c:a copy \ -c:s srt -...
Swift class introspection & generics
...requires an '@required' initializer
Y().me()
^
<REPL>:3:7: note: selected implicit initializer with type '()'
class X {
^
It took me a while to figure out what this means… turns out it wants the class to have a @required init()
class X {
func me() {
println("asdf"...
File Upload without Form
... this tutorial, here a very basic way to do that:
$('your_trigger_element_selector').on('click', function(){
var data = new FormData();
data.append('input_file_name', $('your_file_input_selector').prop('files')[0]);
// append other variables to data if you want: data.append('field_n...
Which version of Perl should I use on Windows? [closed]
...able via ActiveState's repository.
Like most things, you should make your selection based on which distribution best meets your needs.
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How to test a merge without actually merging first
...g Sourcetree.
You must click with the right button on the base branch and select Diff Against Current:
Then sourcetree will show you all the modifications that will be merged if you merge your branch into base branch.
Troubleshooting BadImageFormatException
...server for some reason and always ran our service in x86 mode.
Solution
Select the app pool.
Choose Set Application Pool Defaults... or Advanced Settings....
Change Enable 32-Bit Applications to True.
Click OK.
Choose Set Application Pool Defaults... or Advanced Settings... again.
Change Enable 3...
How can I determine if a date is between two dates in Java? [duplicate]
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Is this better than the "selected solved answer"?
– Christian Moen
Jan 21 '17 at 23:01
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