Where are comparisons used?
For example, in the parameters where and condition.
What comparison can it be?
= — equal or intersection.
!= — not equal or no intersection. Typed as ! + =.
> — greater than.
< — less than.
>= — greater than or equal to. Typed as > + =.
<= — less than or equal to. Typed as < + =.
== — completely equal for lists, associative arrays, and lists of associative arrays. Typed as = + =.
!== — completely not equal for lists, associative arrays, and lists of associative arrays. Typed as ! + = + =.
Is it possible to compare a number to a string?
Yes. They will be compared as numbers if the number represented as a string contains only digits without spaces, and . is used as the decimal separator.
How does comparing a single value to a list work?
true will be returned if there is at least one such element in the list.
How does comparing a list to a list work?
Comparison using = works by intersection. If the lists have at least one common element, it returns true.
How does negative comparison work for lists?
true is returned — there is not a single element from the first list in the second list.
Is the order of the elements important in a simple comparison?
No. If lists are compared using = then:
=: if(condition: $list1 = $list2; then: true; else: false)
list1: listCreate(item: 1; item: 2; item: 3)
list2: listCreate(item: 3; item: 1; item: 2)
// Result true
Do more and less comparisons work for lists?
No — relative comparisons greater, less and others do not work for lists.
How do I make a full comparison?
Full comparison is a double equal ==.
Full comparison will return true if the compared values are completely identical, taking into account the order of elements.
For row, the order of keys does not matter.
What is an empty value?
This is the absence of any symbols, numbers, letters, or special characters.
In Totum, it is denoted by two consecutive double quotes — "".
Is zero equal to an empty value?
No. 0 and "" are not equal elements.
Does an empty list equal an empty value?
Yes — "" equals $#lc.
What is returned by comparing a List with an empty value inside with an empty value?
"" is equal to a list with an empty value ["",2,"A"] because it is an intersection.
How do I check if what I' m given is an empty list?
To ensure that we have a list without a single element, we need to compare with $#lc:
=: if(condition: $value = $#lc; then: true; else: false)
value: json`[]`
// Result true