> SELECT coalesce(null, null, 3, null) AS expression_output; expression_output --- 3 -- Returns `NULL` as all its operands are `NULL`. > SELECT coalesce(null, null, null, null) AS expression_output; expression_output --- null > SELECT isnan(null) AS expression_output; expression_ou...
ConcurrentSkipListMaps) is that ambiguities that may be just barely tolerable in non-concurrent maps can't be accommodated. The main one is that if map.get(key) returns null, you can't detect whether the key explicitly maps to null vs the key isn't mapped. In a non-concurrent map, you...
> SELECT coalesce(null, null, 3, null) AS expression_output; expression_output --- 3 -- Returns `NULL` as all its operands are `NULL`. > SELECT coalesce(null, null, null, null) AS expression_output; expression_output --- null > SELECT isnan(null) AS expression_output;...
Z= null(A,"rational")returns a rational basis for the null space ofAthat is typically not orthonormal. IfAis a small matrix with small integer elements, then the elements ofZare ratios of small integers. This method is numerically less accurate thannull(A). ...
Z= null(A,"rational")returns a rational basis for the null space ofAthat is typically not orthonormal. IfAis a small matrix with small integer elements, then the elements ofZare ratios of small integers. This method is numerically less accurate thannull(A). ...
nbsp;OK, no exception (no boxing), returns&...
> SELECT count(age) FROM person; count(age) --- 5 -- `count(*)` on an empty input set returns 0. This is unlike the other -- aggregate functions, such as `max`, which return `NULL`. > SELECT count(*) FROM person where 1 = 0; count(1) --- 0 -- `NULL` values are excl...
kotlinx.coroutines/reactive/kotlinx-coroutines-reactive/src/Await.kt Line 107 in edd584a public suspend fun <T> Publisher<T>.awaitSingleOrNull(): T = awaitOne(Mode.SINGLE_OR_DEFAULT) awaitSingleOrNull returns not nullable value and @thro...
as ""// Equals applied to any null object returns false.Console.WriteLine("t.Equals(s) is {0}", t.Equals(s));// Equality operator also returns false when one// operand is null.Console.WriteLine("Empty string {0} null string", s == t ?"equals":"does not equal");// Returns ...
System.IO.FileNotFoundException -> printfn"Error: TextFile1.txt not found."exit (1)letstreamReader =newSystem.IO.StreamReader(fileStream1)// ProcessNextLine returns false when there is no more input;// it returns true when there is more input.letProcessNextLine nextLine =matchnextLinewith|nul...