Extension methods for linq operation. More...

Static Public Member Functions
static IEnumerable< T >	ToAotEnumerable< T > (this IEnumerable< T > source)
	Convert to the sequence supports AOT, basically for a value type. More...

static string	JoinText< T > (this IEnumerable< T > source, string separator="\n")
	Join the specified sequence to a `string`, basically for logging. More...

static bool	IsExist (this object value)
	Determine if the specified object is existing, i.e., not equals `null`. More...

static IEnumerable< T >	OfExist< T > (this IEnumerable< T > source)
	Filter elements which is not `null`. More...

static IEnumerable< string >	OfText (this IEnumerable< string > source)
	Filter elements which is not `null` or empty `string`. More...

static IEnumerable< T >	OfMatch< T > (this IEnumerable< T > source, string pattern, Func< T, string > selector=null, RegexOptions options=RegexOptions.ExplicitCapture)
	Filter elements which matches the specified regex pattern. More...

static Dictionary< T, U >	ToDictionary< T, U > (this IEnumerable< IGrouping< T, U >> source)
	Create a `Dictionary<TKey, TValue>` from the sequence of `IGrouping<TKey, TValue>`. More...

static Dictionary< T, U >	ToDictionary< T, U > (this IEnumerable< KeyValuePair< T, U >> source)
	Create a `Dictionary<TKey, TValue>` from the sequence of `KeyValuePair<TKey, TValue>`. More...

static Dictionary< T, U >	KeysToDictionary< T, U > (this IEnumerable< T > source, Func< T, U > elementSelector)
	Create a `Dictionary<TKey, TValue>` from the sequence according to an element selector function. More...

static IEnumerable< T >	OrderByRandom< T > (this IEnumerable< T > source)
	Sort the elements of a sequence in random order. More...

static T	RandomElement< T > (this IEnumerable< T > source)
	Get the random element of a sequence, or a default value if no element. More...

static T	RandomByWeight< T > (this IEnumerable<(T element, float weight)> source)
	Get the random element of a sequence by the specified weight, or a default value if no valid element. More...

Detailed Description

Extension methods for linq operation.

3

Member Function Documentation

static IEnumerable<T> ToAotEnumerable< T > ( this IEnumerable< T > source )

static

Convert to the sequence supports AOT, basically for a value type.

Template Parameters

T	The element type.

Parameters

source The source sequence.

Returns: The sequence.

static string JoinText< T >	(	this IEnumerable< T >	source,
		string	separator = `"\n"`
	)

static

Join the specified sequence to a string, basically for logging.

Template Parameters

T	The element type.

Parameters

source	The source sequence.
separator	Separator.

Returns: The string.

static bool IsExist ( this object value )

static

Determine if the specified object is existing, i.e., not equals null.

Parameters

value Value.

Returns: true, if existing, false otherwise.

static IEnumerable<T> OfExist< T > ( this IEnumerable< T > source )

static

Filter elements which is not null.

Template Parameters

T	The element type.

Parameters

source The source sequence.

Returns: The sequence.

static IEnumerable<string> OfText ( this IEnumerable< string > source )

static

Filter elements which is not null or empty string.

Parameters

source The source sequence.

Returns: The sequence.

static IEnumerable<T> OfMatch< T >	(	this IEnumerable< T >	source,
		string	pattern,
		Func< T, string >	selector = `null`,
		RegexOptions	options = `RegexOptions.ExplicitCapture`
	)

static

Filter elements which matches the specified regex pattern.

Template Parameters

T	The element type.

Parameters

source	The source sequence.
pattern	The regex pattern.
selector	The transform function to get the text to match.
options	The regex options.

Returns: The sequence.

static Dictionary<T, U> ToDictionary< T, U > ( this IEnumerable< IGrouping< T, U >> source )

static

Create a Dictionary<TKey, TValue> from the sequence of IGrouping<TKey, TValue>.

This uses the group key paired with the first element of the group.

Template Parameters

T	The key type.
U	The element type.

Parameters

source The source sequence.

Returns: The dictionary.

static Dictionary<T, U> ToDictionary< T, U > ( this IEnumerable< KeyValuePair< T, U >> source )

static

Create a Dictionary<TKey, TValue> from the sequence of KeyValuePair<TKey, TValue>.

Useful for arranging a dictionary, e.g., filtering, combining, or sorting.

Template Parameters

T	The key type.
U	The element type.

Parameters

source The source sequence.

Returns: The dictionary.

static Dictionary<T, U> KeysToDictionary< T, U >	(	this IEnumerable< T >	source,
		Func< T, U >	elementSelector
	)

static

Create a Dictionary<TKey, TValue> from the sequence according to an element selector function.

Template Parameters

T	The key type.
U	The element type.

Parameters

source	The source sequence.
elementSelector	A transform function to produce an element value from each key.

Returns: The dictionary.

static IEnumerable<T> OrderByRandom< T > ( this IEnumerable< T > source )

static

Sort the elements of a sequence in random order.

Template Parameters

T	The element type.

Parameters

source The source sequence.

Returns: The sequence.

static T RandomElement< T > ( this IEnumerable< T > source )

static

Get the random element of a sequence, or a default value if no element.

Template Parameters

T	The element type.

Parameters

source The source sequence.

Returns: The random element.

static T RandomByWeight< T > ( this IEnumerable<(T element, float weight)> source )

static

Get the random element of a sequence by the specified weight, or a default value if no valid element.

Template Parameters

T	The element type.

Parameters

source The source sequence paired with the weight.

Returns: The random element.

Static Public Member Functions

Detailed Description

Member Function Documentation