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What are the special dollar sign shell variables?
...f the most recent background command.
$0 is the name of the shell or shell script.
Most of the above can be found under Special Parameters in the Bash Reference Manual. There are all the environment variables set by the shell.
For a comprehensive index, please see the Reference Manual Variable In...
How do I clear only a few specific objects from the workspace?
...n can be used to remove all the variables apart from "data". Here is the script:
0->data
1->data_1
2->data_2
3->data_3
#check variables in workspace
ls()
rm(list=setdiff(ls(), "data"))
#check remaining variables in workspace after deletion
ls()
#note: if you just use rm(list) then R ...
How to enter a multi-line command
...l also work in some contexts:
1,
2
Keep in mind, though, similar to JavaScript's Automatic Semicolon Insertion, there are some things that are similarly broken because the line break occurs at a point where it is preceded by a valid statement:
return
5
will not work.
Finally, strings (in al...
Check if event exists on element [duplicate]
...)[0], "events")
Full Example:
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.0/jquery.min.js" type="text/javascript"></script>
<script>
$(function() {
$("#textDiv").click(function() {
...
Add a prefix to all Flask routes
...way mount to sub path in uwsgi uwsgi -s /tmp/yourapplication.sock --manage-script-name --mount /yourapplication=myapp:app . detail refer to (uwsgi document)[flask.pocoo.org/docs/1.0/deploying/uwsgi/]
– todaynowork
Jun 12 '19 at 6:06
...
Facebook Callback appends '#_=_' to Return URL
...k php-sdk)
$facebook->getLoginUrl(array('redirect_uri' => $_SERVER['SCRIPT_URI'],'scope' => 'user_about_me'));
UPDATE
The above is exactly as the documentation says to fix this. However, Facebook's documented solution does not work. Please consider leaving a comment on the Facebook Pl...
Find full path of the Python interpreter?
...ntly running Python interpreter from within the currently executing Python script?
3 Answers
...
Why do people put code like “throw 1; ” and “for(;;);” in front of json responses? [du
...er__('x', function(x) {
alert('Ha! I steal '+x);
});
Then when a <script> was pointed at some JSON that used that property name:
{"x": "hello"}
the value "hello" would be leaked.
The way that array and object literals cause setters to be called is controversial. Firefox removed the ...
Entity Framework rollback and remove bad migration
... |___||_| / \\\/\\
TOPIC
about_EntityFrameworkCore
SHORT DESCRIPTION
Provides information about Entity Framework Core commands.
LONG DESCRIPTION
This topic describes the Entity Framework Core commands. See https://docs.efproject.net for information on Entity Framework Core.
...
How to run a python script from IDLE interactive shell?
How do I run a python script from within the IDLE interactive shell?
15 Answers
15
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