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Confused by python file mode “w+”
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Let's say you're opening the file with a with statement like you should be. Then you'd do something like this to read from your file:
with open('somefile.txt', 'w+') as f:
# Note that f has now been truncated to 0 bytes, so you'll only
# b...
Validate phone number with JavaScript
... North America? If so, you don't want to prevent those people from entering a perfectly valid [international] number.
Secondly, your validation is incorrect. NANP numbers take the form NXX NXX XXXX where N is a digit 2-9 and X is a digit 0-9. Additionally, area codes and exchanges may not take t...
How can I add a string to the end of each line in Vim?
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:%s/$/\*/g
should work. So should :%s/$/*/g as MrWiggles points out correctly.
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NodeJS require a global module/package
I'm trying to install globally and then use forever and forever-monitor like this:
8 Answers
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How to get the source directory of a Bash script from within the script itself?
How do I get the path of the directory in which a Bash script is located, inside that script?
67 Answers
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Why do you create a View in a database?
...ts.
1. Views can hide complexity
If you have a query that requires joining several tables, or has complex logic or calculations, you can code all that logic into a view, then select from the view just like you would a table.
2. Views can be used as a security mechanism
A view can select certain ...
Why is it string.join(list) instead of list.join(string)?
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It's because any iterable can be joined (e.g, list, tuple, dict, set), but the result and the "joiner" must be strings.
For example:
'_'.join(['welcome', 'to', 'stack', 'overflow'])
'_'.join(('welcome', 'to', 'stack', 'overflow'))
'welcome_to_stack_overflow'
Usi...
How can I replace a newline (\n) using sed?
How can I replace a newline (" \n ") with a space (" ") using the sed command?
42 Answers
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Regex to get string between curly braces
Unfortunately, despite having tried to learn regex at least one time a year for as many years as I can remember, I always forget as I use them so infrequently. This year my new year's resolution is to not try and learn regex again - So this year to save me from tears I'll give it to Stack Overflow ...
“rm -rf” equivalent for Windows?
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RMDIR or RD if you are using the classic Command Prompt (cmd.exe):
rd /s /q "path"
RMDIR [/S] [/Q] [drive:]path
RD [/S] [/Q] [drive:]path
/S Removes all directories and files in the specified directory in addition to the directory itsel...