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Regular expression to match DNS hostname or IP Address?
Does anyone have a regular expression handy that will match any legal DNS hostname or IP address?
21 Answers
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Save PL/pgSQL output from PostgreSQL to a CSV file
...ing easy to re-use or automate, you can use Postgresql's built in COPY command. e.g.
Copy (Select * From foo) To '/tmp/test.csv' With CSV DELIMITER ',' HEADER;
This approach runs entirely on the remote server - it can't write to your local PC. It also needs to be run as a Postgres "superuser" (no...
How to convert a currency string to a double with jQuery or Javascript?
... .00 trailing. Otherwise valid representations of currency such as "$1100" and "$1100." will be reduced by two orders of magnitude.
– Brian M. Hunt
Feb 8 '13 at 0:43
21
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How to convert a string to number in TypeScript?
...y: number = +x;
All of the mentioned techniques will have correct typing and will correctly parse simple decimal integer strings like "123", but will behave differently for various other, possibly expected, cases (like "123.45") and corner cases (like null).
Table taken from this answer
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Combining INSERT INTO and WITH/CTE
I have a very complex CTE and I would like to insert the result into a physical table.
3 Answers
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How to convert an integer to a string in any base?
...does include a fast, completely general int-to-string conversion function, and can be built for such ancient versions -- you may need to try older releases since the recent ones have not been tested for venerable Python and GMP releases, only somewhat recent ones), or, for less speed but more conven...
Add disabled attribute to input element using Javascript
I have an input box and I want it to be disabled and at the same time hide it to avoid problems when porting my form.
7 Ans...
How to put a line comment for a multi-line command [duplicate]
I know how to write a multi-line command in a Bash script, but how can I add a comment for each line in a multiline command?
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'pip' is not recognized as an internal or external command
...ation to your PATH variable, you can use the Control Panel or the setx command. For example:
setx PATH "%PATH%;C:\Python34\Scripts"
Note:
According to the official documentation, "[v]ariables set with setx variables are available in future command windows only, not in the current command window...
Add spaces before Capital Letters
... work fine (I even voted up Martin Browns answer), but they are expensive (and personally I find any pattern longer than a couple of characters prohibitively obtuse)
This function
string AddSpacesToSentence(string text, bool preserveAcronyms)
{
if (string.IsNullOrWhiteSpace(text))
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