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Dynamically select data frame columns using $ and a character value
...3 = sample(5,10,repl=T) )
# We want to sort by 'col3' then by 'col1'
sort_list <- c("col3","col1")
# Use 'do.call' to call order. Seccond argument in do.call is a list of arguments
# to pass to the first argument, in this case 'order'.
# Since a data.frame is really a list, we just subset ...
scheduleAtFixedRate vs scheduleWithFixedDelay
...eduledThreadPool(1)
executor.scheduleWithFixedDelay({
if (time >= 12_000L) {
executor.shutdown()
} else {
Thread.sleep(2000L)
val now = System.currentTimeMillis()
time += now - start
System.out.println("Total $time delay ${now - start}\n")
s...
System.Security.SecurityException when writing to Event Log
... Run
Enter regedt32 or regedit
Navigate/expand to the following key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\Security
Right click on this entry and select Permissions
Add the Network Service user
Give it Read permission
UPDATE: The steps above are ok on developer machines,...
ssh: connect to host github.com port 22: Connection timed out
...swered Oct 15 '18 at 12:41
Mahan_FMahan_F
2,74311 gold badge1010 silver badges2121 bronze badges
...
Programmatically selecting text in an input field on iOS devices (mobile Safari)
... I had to listen for both focus AND click events and then setTimeout/_.debounce
to make it work in both cases: click the input or focus through tabbing
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How to check size of a file using Bash?
...@fstab, you may ommit awk by using read (bash internal command): read SIZE _ <<<$(du -sb "$FILENAME")
– Jdamian
Nov 13 '14 at 9:01
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How to tell if a file is git tracked (by shell exit code)?
...er up your console with error messages, you can also run
git ls-files file_name
and then check the result. If git returns nothing, then the file is not tracked. If it's tracked, git will return the file path.
This comes in handy if you want to combine it in a script, for example PowerShell:
$gi...
Django class-based view: How do I pass additional parameters to the as_view method?
...ks something like this:
url(r'^(?P<slug>[a-zA-Z0-9-]+)/$', MyView.as_view(), name = 'my_named_view')
then the slug will be available inside your view functions (such as 'get_queryset') like this:
self.kwargs['slug']
...
How do I run NUnit in debug mode from Visual Studio?
...ess (run in Package Manager Console): ($dte.Debugger.LocalProcesses | ? { $_.Name.EndsWith("nunit-agent.exe") }).Attach()
– bart
Feb 14 '13 at 23:57
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How do I reverse an int array in Java?
...om 'reverse' like this: swap(data, left, right).
– pm_
Dec 10 '15 at 15:29
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