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Perform .join on value in array of objects
...Array.prototype.map is what you're looking for if you want to code functionally.
[
{name: "Joe", age: 22},
{name: "Kevin", age: 24},
{name: "Peter", age: 21}
].map(function(elem){
return elem.name;
}).join(",");
In modern JavaScript:
[
{name: "Joe", age: 22},
{name: "Kevin", age: 2...
What is the best way to call a script from another script?
...s, methods, etc. I have another script which runs as a service. I want to call test1.py from the script running as a service.
...
extract part of a string using bash/cut/split
...
MYVAR="users/joebloggs/domain.com"
Remove the path leaving file name (all characters up to a slash):
echo ${MYVAR##*/}
domain.com
Remove the file name, leaving the path (delete shortest match after last /):
echo ${MYVAR%/*}
users/joebloggs
Get just the file extension (remove all before la...
How to get the directory of the currently running file?
...
It actually works even if os.Args[0] does not contain the abs path. The reason the playground result is not what you expected is because it is inside a sandbox.
– Gustavo Niemeyer
Jul 21 '15 at...
Log all requests from the python-requests module
...I need to debug some OAuth activity, and for that I would like it to log all requests being performed. I could get this information with ngrep , but unfortunately it is not possible to grep https connections (which are needed for OAuth )
...
Version number comparison in Python
...
Now you've merged all the good ideas from the others into your solution ... :-P still, this is pretty much what I'd do after all. I'll accept this answer. Thanks, everyone
– Johannes Charra
Nov 11 '09 at ...
GLib compile error (ffi.h), but libffi is installed
...
If you have a Debian-based Linux OS with apt-get:
sudo apt-get install libffi-dev
With a Redhat-base OS:
yum install libffi-devel
With Alpine Linux:
apk add libffi-dev
share
|
improve...
Two-dimensional array in Swift
... @vacawama, cool, except your n-dimensional array has the same problem as all the solutions that populate the array using Array(repeating:count:). See the comment I posted to your other answer.
– Duncan C
Sep 11 '18 at 0:39
...
What's a good way to extend Error in JavaScript?
...nvironments set the stack property, but fileName and lineNumber are practically useless to be used in inheritance.
So, the minimalistic approach is:
function MyError(message) {
this.name = 'MyError';
this.message = message;
this.stack = (new Error()).stack;
}
MyError.prototype = new Er...
How does '20 seconds' work in Scala?
...
There are a few things going on.
First, Scala allows dots and parens to be omitted from many method calls, so 20 seconds is equivalent to 20.seconds()*.
Second, an "implicit conversion" is applied. Since 20 is an Int and Int has no seconds method, the compiler searches ...