30秒学会 C# 片段 – Yesterday
Returns yesterday’s DateTime value. Use DateTime.Now to get the current date, then use DateTim...
Returns yesterday’s DateTime value. Use DateTime.Now to get the current date, then use DateTim...
Returns the sum of a collection, after mapping each element to a value using the provided function. ...
Counts the occurences of a value in a collection. Use IEnumerable.Count() in combination with Equali...
Generates an array, containing the Fibonacci sequence, up until the nth term. Starting with 0 and 1,...
Returns a string with whitespaces compacted. Use Regex.Replace() with a regular expression to replac...
Splits values into two groups. If an element in filter is true, the corresponding element in the col...
Returns true if two collections contain the same elements regardless of order, false otherwise. Use ...
Returns all distinct values in a collection. Use IEnumerable.Distinct() to get the distinct values i...
Returns true if the provided predicate function returns false for all elements in a collection, fals...
Returns all distinct values in a collection. Use IEnumerable.GroupBy() to create groups for each dis...