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These may be applied to DISTINCT values (throwing out redundancies, as in COUNT(DISTINCT drinker). if no GROUPing is present the aggregate computations apply to the entire result after step 2. There is much more to know about the SELECT statement. The test suite test/test_gadfly.py gives numerous examples of SELECT statements.
A generator expression may be used in Python versions >= 2.4 which gives lazy evaluation over its input, and can be used with generators to iterate over 'infinite' input such as the count generator function which returns successive integers:
Introduced in Python 2.2 as an optional feature and finalized in version 2.3, generators are Python's mechanism for lazy evaluation of a function that would otherwise return a space-prohibitive or computationally intensive list. This is an example to lazily generate the prime numbers:
Condition coverage can be satisfied by two tests: a=true, b=false; a=false, b=true; However, this set of tests does not satisfy branch coverage since neither case will meet the if condition. Fault injection may be necessary to ensure that all conditions and branches of exception-handling code have adequate coverage during testing.
If-then-else flow diagram A nested if–then–else flow diagram. In computer science, conditionals (that is, conditional statements, conditional expressions and conditional constructs) are programming language constructs that perform different computations or actions or return different values depending on the value of a Boolean expression, called a condition.
«otherwise: statements» end case: Modula-2: if condition then statements «else statements» end: if condition 1 then statements elsif condition 2 then statements... «else statements» end: case expression of caseLabelList : statements | ... «else statements» end: ALGOL 68: if condition then statements «else statements» fi: if condition ...
A groundbreaking case in San Diego last year saw two defendants found guilty of charges of conspiracy to riot stemming from their activities as part of an anti-fascist coalition that squared off ...
The other two for loops, and the initialization of the output array, each take O(n) time. Therefore, the time for the whole algorithm is the sum of the times for these steps, O(n + k). [1] [2] Because it uses arrays of length k + 1 and n, the total space usage of the algorithm is also O(n + k). [1]