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How do I write JSON data to a file?
... codecs.getwriter('utf-8')(f), ensure_ascii=False)
The codecs.getwriter call is redundant in Python 3 but required for Python 2
Readability and size:
The use of ensure_ascii=False gives better readability and smaller size:
>>> json.dumps({'price': '€10'})
'{"price": "\\u20ac10"}'
&...
How to do a recursive find/replace of a string with awk or sed?
... -type d -name .git -prune \) is an expression which completely skips over all directories named .git. You could easily expand it, if you use SVN or have other folders you want to preserve -- just match against more names. It's roughly equivalent to -not -path .git, but more efficient, because rathe...
Concatenating Files And Insert New Line In Between Files
...finalfile.txt does not exist before you run the above command.
If you are allowed to use awk you can do:
awk 'FNR==1{print ""}1' *.txt > finalfile.txt
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How do I clone a subdirectory only of a Git repository?
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EDIT: As of Git 2.19, this is finally possible, as can be seen in this answer.
Consider upvoting that answer.
Note: in Git 2.19, only client-side support is implemented, server-side support is still missing, so it only works when cloning local repositories...
How to strip leading “./” in unix “find”?
...sh, it will be treated as an option to find, and may fail, or could potentially do damage.
– Dale Anderson
Dec 11 '15 at 17:53
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Creating C formatted strings (not printing them)
...ee snprintf for a safer version).
A terminating null character is automatically appended after the
content.
After the format parameter, the function expects at least as many
additional arguments as needed for format.
Parameters:
str
Pointer to a buffer where the resulting C-string is stored. The ...
How to get a Docker container's IP address from the host
...n. Maybe provide two examples clearly labelled Linux and Windows. I literally just typed the example, checked the docs which also uses single quotes and then Googled the error. I'm sure I'm not alone.
– Wyck
Apr 15 '19 at 18:42
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Application auto build versioning
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The Go linker (go tool link) has an option to set the value of an uninitialised string variable:
-X importpath.name=value
Set the value of the string variable in importpath named name to
value.
Note that before Go 1.5 this option took two separate arguments.
Now ...
What is the purpose and use of **kwargs?
...t_name = John
last_name = Doe
You can also use the **kwargs syntax when calling functions by constructing a dictionary of keyword arguments and passing it to your function:
>>> kwargs = {'first_name': 'Bobby', 'last_name': 'Smith'}
>>> print_keyword_args(**kwargs)
first_name = B...
Ternary Operator Similar To ?:
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We can combine How to define a ternary operator in Scala which preserves leading tokens? with the answer to Is Option wrapping a value a good pattern? to get
scala> "Hi".getClass.getSimpleName |> {x => x.endsWith("$") ? x.init | x}
res0:...