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Obsidian was founded by Shida Li and Erica Xu while quarantining during the COVID-19 pandemic. [9] Li and Xu, who had met while studying at the University of Waterloo, had already collaborated on several development projects. [10] Obsidian was initially released on 30 March 2020. [11] Version 1.0.0 was released in October 2022. [12] [13]
See also: the {{}} template. The #if function selects one of two alternatives based on the truth value of a test string. {{#if: test string | value if true | value if false}} As explained above, a string is considered true if it contains at least one non-whitespace character.
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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.
For any statements S and N, the assertion that "N is necessary for S" is equivalent to the assertion that "S is sufficient for N". Another facet of this duality is that, as illustrated above, conjunctions (using "and") of necessary conditions may achieve sufficiency, while disjunctions (using "or") of sufficient conditions may achieve necessity.
In Extended BASIC one could write a simple statement like IF X > 10 THEN X = X-1. This also worked in the ELSE clause, allowing statements like IF A = 4 AND B = 6 THEN R = 10 ELSE PRINT "OOPS". [18] Other additions include a small selection of new statements, including ACCEPT, IMAGE, LINPUT, ON BREAK, ON ERROR, ON WARNING, SUB, SUBEND and SUBEXIT.
The detailed semantics of "the" ternary operator as well as its syntax differs significantly from language to language. A top level distinction from one language to another is whether the expressions permit side effects (as in most procedural languages) and whether the language provides short-circuit evaluation semantics, whereby only the selected expression is evaluated (most standard ...
Venn diagram of (true part in red) In logic and mathematics, the logical biconditional, also known as material biconditional or equivalence or bidirectional implication or biimplication or bientailment, is the logical connective used to conjoin two statements and to form the statement "if and only if" (often abbreviated as "iff " [1]), where is known as the antecedent, and the consequent.