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15 paź 2013 · For arrays you can use: Array.FindIndex<T>: int keyIndex = Array.FindIndex(words, w => w.IsKey); For lists you can use List<T>.FindIndex: int keyIndex = words.FindIndex(w => w.IsKey); You can also write a generic extension method that works for any Enumerable<T>: ///<summary>Finds the index of the first item matching an expression in an enumerable.
7 paź 2020 · You can use Array.IndexOf() method. var index = Array.IndexOf(myArray,valueToFind);
IndexOf<T> (T [], T, Int32, Int32) Searches for the specified object in a range of elements of a one-dimensional array, and returns the index of its first occurrence. The range extends from a specified index for a specified number of elements.
14 lis 2023 · The index from end operator ^, which specifies that an index is relative to the end of a sequence. System.Range represents a sub range of a sequence. The range operator .., which specifies the start and end of a range as its operands. Let's start with the rules for indices. Consider an array sequence.
Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the first occurrence within the range of elements in the Array that extends from the specified index to the last element.
24 sty 2024 · The range operator… It accepts two operands, like x..y. However, either can be omitted. The former operand defines the start index (inclusive), while the latter is for the end index...
24 lut 2019 · Use index to locate an element in sequence, use range to slice sequence. The usage is the same as index/range for array, but with deferred execution for slice with range. Use range to start fluent LINQ query. This enables the index and range to work with any type that implements IEnumerable<T>.
