IsNull()
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]TestTools::IsNull(T) method
Checks if specific value is null. Version for arithmetic and enum types.
template<typename T> static std::enable_if<std::is_arithmetic<T>::value||std::is_enum<T>::value, bool>::type System::TestTools::IsNull(T obj)
Template parameters
| Parameter | Description |
|---|---|
| T | Type of value being checked. |
Arguments
| Parameter | Type | Description |
|---|---|---|
| obj | T | Value to check for null. |
Return Value
Always returns false.
TestTools::IsNull(const T&) method
Checks if specific value is null. Version for non-arithmetic and non-enum value types.
template<typename T> static std::enable_if<!std::is_arithmetic<T>::value &&!std::is_enum<T>::value, bool>::type System::TestTools::IsNull(const T &obj)
Template parameters
| Parameter | Description |
|---|---|
| T | Type of value being checked. |
Arguments
| Parameter | Type | Description |
|---|---|---|
| obj | const T& | Value to check for null. |
Return Value
True if object is compared to nullptr as true, false otherwise.
TestTools::IsNull(const SharedPtr<T>&) method
Checks if specific value is null. Version for non-arithmetic value types.
template<typename T> static bool System::TestTools::IsNull(const SharedPtr<T> &obj)
Template parameters
| Parameter | Description |
|---|---|
| T | Type of value being checked. |
Arguments
| Parameter | Type | Description |
|---|---|---|
| obj | const SharedPtr<T>& | Value to check for null. |
Return Value
True if object is compared to nullptr as true, false otherwise.
TestTools::IsNull(System::Collections::Generic::KeyValuePair<K, V>&) method
Checks if specific value is null. Version for key-value pairs.
template<typename K,typename V> static bool System::TestTools::IsNull(System::Collections::Generic::KeyValuePair<K, V> &kvp)
Template parameters
| Parameter | Description |
|---|---|
| K | Key type. |
| V | Value type. |
Arguments
| Parameter | Type | Description |
|---|---|---|
| kvp | System::Collections::Generic::KeyValuePair<K, V>& | Pair object. |
Return Value
True if pair is considered null, false otherwise.
TestTools::IsNull(const System::String&) method
Checks if string is null.
static bool System::TestTools::IsNull(const System::String &str)
Arguments
| Parameter | Type | Description |
|---|---|---|
| str | const System::String& | String to check. |
Return Value
True if string is considered null, false otherwise.
See Also
- Typedef SharedPtr
- Class KeyValuePair
- Class String
- Struct TestTools
- Namespace System
- Library Aspose.Slides