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Create a File object in memory from a string in Java
... file - passing an "empty" File object won't work.
– Andrei Volgin
Nov 5 '19 at 17:16
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How to list running screen sessions?
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To list all of the screen sessions for a user, run the following command as that user:
screen -ls
To see all screen sessions on a specific machine you can do:
ls -laR /var/run/screen/
I get this on my machine:
gentle ~ # ls -laR /var/run/screen/
/var/run/screen/:
total 1
drwxrwxr-x 4 ...
How can I add a class attribute to an HTML element generated by MVC's HTML Helpers?
... using HTML Helpers, for example @Html.ActionLink() , @Html.BeginForm() and so on.
2 Answers
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Python list of dictionaries search
...icts if item["name"] == "Pam")
{'age': 7, 'name': 'Pam'}
If you need to handle the item not being there, then you can do what user Matt suggested in his comment and provide a default using a slightly different API:
next((item for item in dicts if item["name"] == "Pam"), None)
And to find the in...
HTTP GET request in JavaScript?
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Browsers (and Dashcode) provide an XMLHttpRequest object which can be used to make HTTP requests from JavaScript:
function httpGet(theUrl)
{
var xmlHttp = new XMLHttpRequest();
xmlHttp.open( "GET", theUrl, false ); // false fo...
Why is the parent div height zero when it has floated children
...formatting context. See methods for containing floats for other techniques and containing floats for an explanation about why CSS was designed this way.
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Piping command output to tee but also save exit code of command [duplicate]
I have a shell script in which I wrap a command (mvn clean install), to redirect the output to a logfile.
4 Answers
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How do I return early from a rake task?
..."
next
puts "never printed"
end
Or you can move the code in a method and use return in the method.
task :foo do
do_something
end
def do_something
puts "startd"
return
puts "end"
end
I prefer the second choice.
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Is it possible to forward-declare a function in Python?
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If you don't want to define a function before it's used, and defining it afterwards is impossible, what about defining it in some other module?
Technically you still define it first, but it's clean.
You could create a recursion like the following:
def foo():
bar()
def bar()...
Split a string on whitespace in Go?
...int) []string
Split slices s into substrings separated by the expression and returns
a slice of the substrings between those expression matches.
The slice returned by this method consists of all the substrings
of s not contained in the slice returned by FindAllString. When called
on an expression...