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Changing git commit message after push (given that no one pulled from remote)
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edited May 23 '17 at 10:31
Community♦
111 silver badge
answered Jan 24 '12 at 2:02
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How to sort an array in Bash
... whitespace in elements (as long as it's not a newline), and works in Bash 3.x.
e.g.:
$ array=("a c" b f "3 5")
$ IFS=$'\n' sorted=($(sort <<<"${array[*]}")); unset IFS
$ printf "[%s]\n" "${sorted[@]}"
[3 5]
[a c]
[b]
[f]
Note: @sorontar has pointed out that care is required if elements...
How can I extract all values from a dictionary in Python?
I have a dictionary d = {1:-0.3246, 2:-0.9185, 3:-3985, ...} .
11 Answers
11
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Update MongoDB field using value of another field
..."name": { "$concat": ["$firstName", " ", "$lastName"]}}}
]
)
MongoDB 3.4+
In 3.4+ you can use $addFields and the $out aggregation pipeline operators.
db.collection.aggregate(
[
{ "$addFields": {
"name": { "$concat": [ "$firstName", " ", "$lastName" ] }
}},
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PyCharm shows unresolved references error for valid code
...Dmitry Trofimov
6,54511 gold badge2424 silver badges3232 bronze badges
3
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What is the best way to implement nested dictionaries?
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183
What is the best way to implement nested dictionaries in Python?
This is a bad idea, don't do ...
How to change Android Studio's editor font?
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32
Thanks, that worked. Not very intuitive UX, generally you save something after you have edited it, not before! I'll accept once it lets m...
How do you manually execute SQL commands in Ruby On Rails using NuoDB
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edited Jan 23 '19 at 10:24
Jan Klimo
3,42911 gold badge2727 silver badges3737 bronze badges
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How can I represent an infinite number in Python?
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In Python, you can do:
test = float("inf")
In Python 3.5, you can do:
import math
test = math.inf
And then:
test > 1
test > 10000
test > x
Will always be true. Unless of course, as pointed out, x is also infinity or "nan" ("not a number").
Additionally (Python 2...
What exactly is Arel in Rails 3.0?
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What exactly is Arel in Rails 3.0?
It's an object model for an algebra of relational query operators.
I understand that it is a replacement for ActiveRecord
No, it isn't. It's a replacement for hand-crafting SQL queries in strings. It is a common query...