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Regex for string contains?
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81
Assuming regular PCRE-style regex flavors:
If you want to check for it as a single, full word, ...
Running multiple commands in one line in shell
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edited Apr 26 '14 at 1:06
answered Feb 27 '11 at 1:44
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How to abandon a hg merge?
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128
You can discard uncommitted changes with the -C (or --clean) flag:
hg update -C -r 3
BEWARE...
What would cause an algorithm to have O(log n) complexity?
...ere are a few:
Repeatedly dividing by a constant
Take any number n; say, 16. How many times can you divide n by two before you get a number less than or equal to one? For 16, we have that
16 / 2 = 8
8 / 2 = 4
4 / 2 = 2
2 / 2 = 1
Notice that this ends up taking four steps to complete. Inte...
Which, if any, C++ compilers do tail-recursion optimization?
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131
All current mainstream compilers perform tail call optimisation fairly well (and have done for...
Using NSPredicate to filter an NSArray based on NSDictionary keys
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151
It should work - as long as the data variable is actually an array containing a dictionary wit...
UPDATE multiple tables in MySQL using LEFT JOIN
I have two tables, and want to update fields in T1 for all rows in a LEFT JOIN.
5 Answers
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bool to int conversion
...rted to one.
As for C, as far as I know there is no bool in C. (before 1999) So bool to int conversion is relevant in C++ only. In C, 4<5 evaluates to int value, in this case the value is 1, 4>5 would evaluate to 0.
EDIT: Jens in the comment said, C99 has _Bool type. bool is a macro def...
Transparent ARGB hex value
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edited Feb 18 '16 at 5:17
Robert
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answered Apr 2...
What is a 'semantic predicate' in ANTLR?
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170
ANTLR 4
For predicates in ANTLR 4, checkout these stackoverflow Q&A's:
Syntax of semant...