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What are the -Xms and -Xmx parameters when starting JVM?
...the use of Xms and Xmx parameters in JVMs. What are the default values for them?
5 Answers
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Swift: Pass array by reference?
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For function parameter operator we use:
let (it's default operator, so we can omit let) to make a parameter constant (it means we cannot modify even local copy);
var to make it variable (we can modify it locally, but it wont ...
Extracting extension from filename in Python
...s part of a more complex expression the [1] may be more useful: if check_for_gzip and os.path.splitext(filename)[1] == '.gz':
– gerardw
Feb 20 '18 at 19:38
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How would you go about parsing Markdown? [closed]
...the parser is written in OCaml, it is extremely simple and short (268 SLOC for the parser, 43 SLOC for the HTML emitter), yet blazingly fast (20% faster than discount (written in hand-optimized C) and sixhundred times faster than BlueCloth (Ruby)), despite the fact that it isn't even optimized for p...
Get itunes link for app before submitting
... Is there any other known way to get the itunes/app store link to my app before I submit the binary?
17 Answers
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psql: FATAL: role “postgres” does not exist
...at to login. And looking at the output of your \l command: The permissions for user on the template0 and template1 databases are the same as on my Ubuntu system for the superuser postgres. So I think your setup simple uses user as the superuser. So you could try this command to login:
sudo -u user ...
SQL update query using joins
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FYI this will NOT work in MySQL (different syntax)! For MySQL have a look at gcbenison's answer
– Sliq
Jan 17 '17 at 16:28
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ruby 1.9: invalid byte sequence in UTF-8
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There is also the option of force_encoding. If you have a read a ISO8859-1 as an UTF-8 (and thus that string contains invalid UTF-8) then you can "reinterpret" it as ISO8859-1 with the_string.force_encoding("ISO8859-1") and just work with that string in...
python-pandas and databases like mysql
The documentation for Pandas has numerous examples of best practices for working with data stored in various formats.
13 An...
How to make an HTML back link?
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And for a button: <button type="button" onclick="javascript:history.back()">Back</button>
– Leo
Aug 19 '16 at 13:55
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