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JavaScriptUTC date operations

Count days between UTC-midnight dates

JavaScript: A day is exactly 86400000 milliseconds for these explicitly UTC-midnight inputs.

JavaScript✓ Tested
TypeScriptUTC date operations

Count days between UTC-midnight dates

TypeScript: A day is exactly 86400000 milliseconds for these explicitly UTC-midnight inputs.

TypeScript✓ Tested
Bash ScriptsGetting Started

Count down with a while loop

Bash Scripts: Count down with a while loop with a small standalone Bash program.

Bash Scripts✓ Tested
C++Sequence algorithms

Count elements satisfying a predicate

C++: count_if counts matches without constructing a filtered collection.

C++✓ Tested
jQueryGetting Started

Count matched elements

jQuery: Learn how to count matched elements in a complete browser example.

jQuery✓ Tested
CArrays

Count matching values

Count even numbers in a fixed C array.

C✓ Tested
C++Ordering & set operations

Count occurrences in a sorted sequence

C++: equal_range finds the half-open interval containing values equal to the key.

C++✓ Tested
CSmall algorithms & bit operations

Count set bits in an unsigned integer

C: Clearing the lowest set bit on each iteration counts only one iteration per set bit.

C✓ Tested
Bash ScriptsArray operations

Count the elements in an array

Bash Scripts: The array length form counts assigned elements, not characters in the first value.

Bash Scripts✓ Tested
PythonGetting Started

Count the items in a collection

Python: Read the collection’s length instead of hard-coding the loop limit.

Python✓ Tested
JavaGetting Started

Count the items in a collection

Java: Read the collection’s length instead of hard-coding the loop limit.

Java✓ Tested
JavaScriptGetting Started

Count the items in a collection

JavaScript: Read the collection’s length instead of hard-coding the loop limit.

JavaScript✓ Tested