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How to use shared memory with Linux in C
I have a bit of an issue with one of my projects.
5 Answers
5
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What is the expected syntax for checking exception messages in MiniTest's assert_raises/must_raise?
What is the expected syntax for checking exception messages in MiniTest's assert_raises / must_raise ?
4 Answers
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JPA or JDBC, how are they different?
I am learning Java EE and I downloaded the eclipse with glassfish for the same. I saw some examples and also read the Oracle docs to know all about Java EE 5. Connecting to a database was very simple. I opened a dynamic web project, created a session EJB , I used EntityManager and with the get meth...
Items in JSON object are out of order using “json.dumps”?
...thon 3.6, the keyword argument order is preserved and the above can be rewritten using a nicer syntax:
>>> json.dumps(OrderedDict(a=1, b=2))
'{"a": 1, "b": 2}'
>>> json.dumps(OrderedDict(b=2, a=1))
'{"b": 2, "a": 1}'
See PEP 468 – Preserving Keyword Argument Order.
If your in...
Which is more efficient: Multiple MySQL tables or one large table?
I store various user details in my MySQL database. Originally it was set up in various tables meaning data is linked with UserIds and outputting via sometimes complicated calls to display and manipulate the data as required. Setting up a new system, it almost makes sense to combine all of these tabl...
Best way to test if a row exists in a MySQL table
I'm trying to find out if a row exists in a table. Using MySQL, is it better to do a query like this:
12 Answers
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Python error “ImportError: No module named”
...ed on your comments to orip's post, I guess this is what happened:
You edited __init__.py on windows.
The windows editor added something non-printing, perhaps a carriage-return (end-of-line in Windows is CR/LF; in unix it is LF only), or perhaps a CTRL-Z (windows end-of-file).
You used WinSCP to c...
Get current directory name (without full path) in a Bash script
... any trailing slashes. The below uses bash's extglob support to work even with multiple trailing slashes:
dirname=/path/to/somewhere//
shopt -s extglob # enable +(...) glob syntax
result=${dirname%%+(/)} # trim however many trailing slashes exist
result=${result##*/} # remove eve...
JavaScript - Replace all commas in a string [duplicate]
I have a string with multiple commas, and the string replace method will only change the first one:
3 Answers
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How to detect internet speed in JavaScript?
...te a JavaScript page that will detect the user’s internet speed and show it on the page? Something like “your internet speed is ??/?? Kb/s” .
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