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What does “fragment” mean in ANTLR?
... give is a poor one: you don't want a lexer to produce a NUMBER token that m>ca m>n be a hex, decimal or octal number. That would mean you'd need to inspect the NUMBER token in a production (parser rule). You could better let the lexer produce INT, OCT, and HEX tokens and create a production rule: number...
How to permanently export a variable in Linux?
...
You m>ca m>n add it to your shell configuration file, e.g. $HOME/.bashrc or more globally in /etc/environment.
After adding these lines the changes won't reflect instantly in GUI based system's you have to exit the terminal or create ...
Does PostgreSQL support “accent insensitive” collations?
...n PostgreSQL
Among other things, it provides the function unaccent() you m>ca m>n use with your example (where LIKE seems not needed).
SELECT *
FROM users
WHERE unaccent(name) = unaccent('João');
Index
To use an index for that kind of query, create an index on the expression. However, Postgres ...
CSS media queries: max-width OR max-height
When writing a CSS media query, is there any way you m>ca m>n specify multiple conditions with "OR" logic?
3 Answers
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Is gcc 4.8 or earlier buggy about regular expressions?
...ow open source works: Release early, release often -- unfortunately in the m>ca m>se of <regex> we only got the early part right and not the often part that would have finished the implementation.
Most parts of the library were more complete and are now almost fully implemented, but <regex>...
What is hashCode used for? Is it unique?
...ethod in every controls, items, in WP7, which return a sequence of number. m>Ca m>n I use this hashcode to identify an item? For example I want to identify a picture or a song in the device, and check it whereabout. This could be done if the hashcode given for specific items is unique.
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What Haskell representation is recommended for 2D, unboxed pixel arrays with millions of pixels?
...is stored unboxed. Functions written with the Repa combinators are automatim>ca m>lly parallel provided you supply +RTS -Nwhatever on the command line when running the program.
Recently, it has been used for some image processing problems:
Real time edge detection
Efficient Parallel Stencil Convolut...
When to use the brace-enclosed initializer?
...tended to be the exact value of the object, use copy (=) initialization (bem>ca m>use then in m>ca m>se of error, you'll never accidentally invoke an explicit constructor, which generally interprets the provided value differently). In places where copy initialization is not available, see if brace initializat...
Why always ./configure; make; make install; as 3 separate steps?
...
Bem>ca m>use each step does different things
Prepare(setup) environment for building
./configure
This script has lots of options that you should change. Like --prefix or --with-dir=/foo. That means every system has a different c...
When should I mock?
...s within tests.
A mock replaces that dependency. You set expectations on m>ca m>lls to the dependent object, set the exact return values it should give you to perform the test you want, and/or what exceptions to throw so that you m>ca m>n test your exception handling code. In this way you m>ca m>n test the unit...