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sed: print only matching group
...eplaced with the contents of the group
echo "foo bar <foo> bla 1 2 3.4" |
sed -n 's/.*\([0-9][0-9]*[\ \t][0-9.]*[ \t]*$\)/\1/p'
2 3.4
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How do I forward parameters to other command in bash script?
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3 Answers
3
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Remove a prefix from a string [duplicate]
... return text # or whatever
As noted by @Boris and @Stefan, on Python 3.9+ you can use
text.removeprefix(prefix)
with the same behavior.
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Maximum and Minimum values for ints
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Python 3
In Python 3, this question doesn't apply. The plain int type is unbounded.
However, you might actually be looking for information about the current interpreter's word size, which will be the same as the machine's word siz...
How to get item's position in a list?
...in enumerate(testlist) if x == 1]
Example:
>>> testlist
[1, 2, 3, 5, 3, 1, 2, 1, 6]
>>> [i for i,x in enumerate(testlist) if x == 1]
[0, 5, 7]
Update:
Okay, you want a generator expression, we'll have a generator expression. Here's the list comprehension again, in a for loop...
Getting list of lists into pandas DataFrame
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3 Answers
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How to write multiple line string using Bash with variables?
...command used (echo) is wrong.
Correct would be:
#!/bin/bash
kernel="2.6.39"
distro="xyz"
cat >/etc/myconfig.conf <<EOL
line 1, ${kernel}
line 2,
line 3, ${distro}
line 4 line
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EOL
cat /etc/myconfig.conf
This construction is referred to as a Here Document and can be found in the B...
JavaScript “new Array(n)” and “Array.prototype.map” weirdness
I've observed this in Firefox-3.5.7/Firebug-1.5.3 and Firefox-3.6.16/Firebug-1.6.2
14 Answers
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How can I add new keys to a dictionary?
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3536
d = {'key': 'value'}
print(d)
# {'key': 'value'}
d['mynewkey'] = 'mynewvalue'
print(d)
# {'ke...
Disable ALL CAPS menu items in Visual Studio 2013
In Visual Studio 2013, Microsoft again presents the menu in UPPERCASE as the default.
6 Answers
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