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Quit and restart a clean R session from within R?
... to be included in R script to restart R session? (the reason being I want all packages to be detached)
– Heisenberg
Oct 19 '14 at 20:04
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Find JavaScript function definition in Chrome
...ft + F, or macOS:
cmd + optn + F. This opens a window for searching across all scripts.
check "Regular expression" checkbox,
search for foo\s*=\s*function (searches for foo = function with any number of spaces between those three tokens),
press on a returned result.
Another variant for function d...
django-debug-toolbar not showing up
... to settings.py:
def show_toolbar(request):
return True
SHOW_TOOLBAR_CALLBACK = show_toolbar
That will effectively remove all checks by debug toolbar to determine if it should or should not load itself; it will always just load. Only leave that in for testing purposes, if you forget and launc...
For each row in an R dataframe
...
How do you actually implement (row)? Is it dataframe$column? dataframe[somevariableNamehere]? How do you actually say its a row. The pseudocode "function(row) dostuff" how would that actually look?
– uh_big_mike_boi...
Do zombies exist … in .NET?
...ead that has terminated but somehow still holds onto some resources. An example he gave of how a zombie thread could break a system was a thread begins some procedure after locking on some object, and then is at some point terminated before the lock can be released. This situation has the potentia...
Swift double to string
Before I updated xCode 6, I had no problems casting a double to a string but now it gives me an error
14 Answers
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Setting unique Constraint with fluent API?
...ough fluent API.
https://github.com/aspnet/EntityFramework6/issues/274
Example
modelBuilder
.Entity<User>()
.HasIndex(u => u.Email)
.IsUnique();
On EF6.1 onwards, you can use IndexAnnotation() to add indexes for migration in your fluent API.
http://msdn.microsoft.com/e...
Rolling back a remote Git repository
...
You can use git revert <commit>… for all the n commits, and then push as usual, keeping history unchanged.
Or you can "roll back" with git reset --hard HEAD~n. If you are pushing in a public or shared repository, you may diverge and break others work based on y...
What does %s mean in a python format string?
...insert values into a
string with the %s placeholder.
Edit: Here is a really simple example:
#Python2
name = raw_input("who are you? ")
print "hello %s" % (name,)
#Python3+
name = input("who are you? ")
print("hello %s" % (name,))
The %s token allows me to insert (and potentially format) a st...
A worthy developer-friendly alternative to PayPal [closed]
...ably in in Python or Ruby
Stripe has official libraries in Python, Ruby, PHP and Java, and there are more community-supported ones here: https://stripe.com/docs/libraries
Worldwide credit/debit card coverage
You can charge all international credit and debit cards with Stripe.
Rates cheap...