大约有 1,824 项符合查询结果（耗时：0.0309秒） [XML]
How to trick an application into thinking its stdout is a terminal, not a pipe
...mmand in quotes. The script runs and sends output to the tty which is duplicated in the supplied file, but I can't seem to get the linux version to behave the same way... I'm probably doing something wrong. So what's the equivalent linux script command for this on macOS: script -q -t 0 tmp.out perl ...
How to extract numbers from a string in Python?
...ct only positive integers, try the following:
>>> str = "h3110 23 cat 444.4 rabbit 11 2 dog"
>>> [int(s) for s in str.split() if s.isdigit()]
[23, 11, 2]
I would argue that this is better than the regex example because you don't need another module and it's more readable because y...
How to list all tags along with the full message in git?
...e. I believe the following is a bit nicer:
for t in `git tag -l`; do git cat-file -p `git rev-parse $t`; done
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Get environment variable value in Dockerfile
...
So you can do:
cat Dockerfile | envsubst | docker build -t my-target -
Then have a Dockerfile with something like:
ENV MY_ENV_VAR $MY_ENV_VAR
I guess there might be a problem with some special characters, but this works for most cases a...
How to get key names from JSON using jq
curl http://testhost.test.com:8080/application/app/version | jq '.version' | jq '.[]'
7 Answers
...
Merge PDF files
...t ImportError:
from pyPdf import PdfFileReader, PdfFileWriter
def pdf_cat(input_files, output_stream):
input_streams = []
try:
# First open all the files, then produce the output file, and
# finally close the input files. This is necessary because
# the data isn'...
SQL Joins Vs SQL Subqueries (Performance)?
...- this makes no difference for a unique ID, but will give you tons of duplicates elsewhere. Sorting these out with DISTINCT or GROUP BY will be another, heavy performance load. Check execution plans in SQL Server Management Studio!
– Erik Hart
Dec 27 '13 at 9:3...
Is there a way to instantiate objects from a string holding their class name?
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Why does C++ not have reflection?
How can I add reflection to a C++ application?
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Rebasing a branch including all its children
...s, and won't
# run unless auto-rebase is empty. Leave this here to catch programming
# errors, and for possible future -f option.
git for-each-ref --format="%(refname)" $REF_NAMESPACE |
while read ref; do
echo git update-ref -d $ref
done
else
...
Unix command-line JSON parser? [closed]
...es for every command
It allows you to do powerful things really easily:
cat earthporn.json | underscore select '.data .title'
# [ 'Fjaðrárgljúfur canyon, Iceland [OC] [683x1024]',
# 'New town, Edinburgh, Scotland [4320 x 3240]',
# 'Sunrise in Bryce Canyon, UT [1120x700] [OC]',
# ...
# 'K...