DictionaryExtensions

Dictionary extension methods

public static class DictionaryExtensions

Namespace

Vendr.Core

Methods

GetTypedValueAs<T>

Get the value of dictionary cast to a given Type

public static T GetTypedValueAs<T>(this IDictionary<string, object> dict, string key)

Parameters

Parameter	Description
T	The Type to cast the Value to
dict	The dictionary to retrieve the Value from
key	The Key of the Value to retrieve

Returns

The cast dictionary Value, or default(T) if the Value is not present or cannot be cast to the given type

ToNullSafeDictionary<TKey,TValue> (1 of 2)

Converts a dictionary into a null safe dictionary that won't error if attempting to access a key that isn't present

public static NullSafeDictionary<TKey, TValue> ToNullSafeDictionary<TKey, TValue>(
    this IDictionary<TKey, TValue> source)
    where TValue : class

Parameters

Parameter	Description
TKey	The Type of the dictionary key
TValue	The Type of the dictionary value
source	The source dictionary to convert

Returns

A null safe version of the input dictionary

ToNullSafeDictionary<TKey,TValue> (2 of 2)

Converts a dictionary into a null safe dictionary that won't error if attempting to access a key that isn't present

public static NullSafeDictionary<TKey, TValue> ToNullSafeDictionary<TKey, TValue>(
    this IDictionary<TKey, TValue> source, IEqualityComparer<TKey> keyComparer)
    where TValue : class

Parameters

Parameter	Description
TKey	The Type of the dictionary key
TValue	The Type of the dictionary value
source	The source dictionary to convert
keyComparer	The IEqualityComparer implementation to use when comparing keys

Returns

A null safe version of the input dictionary

ToNullSafeDictionary<TSource,TKey,TValue> (1 of 2)

Converts a list of items into a null safe dictionary that won't error if attempting to access a key that isn't present

public static NullSafeDictionary<TKey, TValue> ToNullSafeDictionary<TSource, TKey, TValue>(
    this IEnumerable<TSource> source, Func<TSource, TKey> keySelector, 
    Func<TSource, TValue> elementSelector)
    where TValue : class

Parameters

Parameter	Description
TSource	The Type of the source element
TKey	The Type of the dictionary key
TValue	The Type of the dictionary value
source	The source list of elements to convert
keySelector	A delegate function to access the Key from the source element
elementSelector	A delegate function to access the Value from the source element

Returns

A null safe version of the input dictionary

ToNullSafeDictionary<TSource,TKey,TValue> (2 of 2)

Converts a list of items into a null safe dictionary that won't error if attempting to access a key that isn't present

public static NullSafeDictionary<TKey, TValue> ToNullSafeDictionary<TSource, TKey, TValue>(
    this IEnumerable<TSource> source, Func<TSource, TKey> keySelector, 
    Func<TSource, TValue> elementSelector, IEqualityComparer<TKey> keyComparer)
    where TValue : class

Parameters

Parameter	Description
TSource	The Type of the source element
TKey	The Type of the dictionary key
TValue	The Type of the dictionary value
source	The source list of elements to convert
keySelector	A delegate function to access the Key from the source element
elementSelector	A delegate function to access the Value from the source element
keyComparer	The IEqualityComparer implementation to use when comparing keys

Returns

A null safe version of the input dictionary

ToPropertyCollection<TValue>

public static PropertyCollection<TValue> ToPropertyCollection<TValue>(
    this IDictionary<string, TValue> source)
    where TValue : class

ToPropertyCollection<TSource,TValue>

public static PropertyCollection<TValue> ToPropertyCollection<TSource, TValue>(
    this IEnumerable<TSource> source, Func<TSource, string> keySelector, 
    Func<TSource, TValue> elementSelector)
    where TValue : class

TryGetTypedValue<T>

Try to get the value of dictionary cast to a given Type

public static bool TryGetTypedValue<T>(this IDictionary<string, object> dict, string key, 
    out T result)

Parameters

Parameter	Description
T	The Type to cast the Value to
dict	The dictionary to retrieve the Value from
key	The Key of the Value to retrieve
result	The cast dictionary Value, or default(T) if the Value is not present or cannot be cast to the given type

Returns

Boolean indicating whether the operation was successful or not

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