dotnet-core/release-notes/1.0/1.0.0-api/1.0.0-api_System.Diagnostics.Contracts.md
2017-07-05 14:24:38 -07:00

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# System.Diagnostics.Contracts
``` diff
+namespace System.Diagnostics.Contracts {
+ public static class Contract {
+ public static event EventHandler<ContractFailedEventArgs> ContractFailed;
+ public static void Assert(bool condition);
+ public static void Assert(bool condition, string userMessage);
+ public static void Assume(bool condition);
+ public static void Assume(bool condition, string userMessage);
+ public static void EndContractBlock();
+ public static void Ensures(bool condition);
+ public static void Ensures(bool condition, string userMessage);
+ public static void EnsuresOnThrow<TException>(bool condition) where TException : Exception;
+ public static void EnsuresOnThrow<TException>(bool condition, string userMessage) where TException : Exception;
+ public static bool Exists(int fromInclusive, int toExclusive, Predicate<int> predicate);
+ public static bool Exists<T>(IEnumerable<T> collection, Predicate<T> predicate);
+ public static bool ForAll(int fromInclusive, int toExclusive, Predicate<int> predicate);
+ public static bool ForAll<T>(IEnumerable<T> collection, Predicate<T> predicate);
+ public static void Invariant(bool condition);
+ public static void Invariant(bool condition, string userMessage);
+ public static T OldValue<T>(T value);
+ public static void Requires(bool condition);
+ public static void Requires(bool condition, string userMessage);
+ public static void Requires<TException>(bool condition) where TException : Exception;
+ public static void Requires<TException>(bool condition, string userMessage) where TException : Exception;
+ public static T Result<T>();
+ public static T ValueAtReturn<T>(out T value);
+ }
+ public sealed class ContractAbbreviatorAttribute : Attribute {
+ public ContractAbbreviatorAttribute();
+ }
+ public sealed class ContractArgumentValidatorAttribute : Attribute {
+ public ContractArgumentValidatorAttribute();
+ }
+ public sealed class ContractClassAttribute : Attribute {
+ public ContractClassAttribute(Type typeContainingContracts);
+ public Type TypeContainingContracts { get; }
+ }
+ public sealed class ContractClassForAttribute : Attribute {
+ public ContractClassForAttribute(Type typeContractsAreFor);
+ public Type TypeContractsAreFor { get; }
+ }
+ public sealed class ContractFailedEventArgs : EventArgs {
+ public ContractFailedEventArgs(ContractFailureKind failureKind, string message, string condition, Exception originalException);
+ public string Condition { get; }
+ public ContractFailureKind FailureKind { get; }
+ public bool Handled { get; }
+ public string Message { get; }
+ public Exception OriginalException { get; }
+ public bool Unwind { get; }
+ public void SetHandled();
+ public void SetUnwind();
+ }
+ public enum ContractFailureKind {
+ Assert = 4,
+ Assume = 5,
+ Invariant = 3,
+ Postcondition = 1,
+ PostconditionOnException = 2,
+ Precondition = 0,
+ }
+ public sealed class ContractInvariantMethodAttribute : Attribute {
+ public ContractInvariantMethodAttribute();
+ }
+ public sealed class ContractOptionAttribute : Attribute {
+ public ContractOptionAttribute(string category, string setting, bool enabled);
+ public ContractOptionAttribute(string category, string setting, string value);
+ public string Category { get; }
+ public bool Enabled { get; }
+ public string Setting { get; }
+ public string Value { get; }
+ }
+ public sealed class ContractPublicPropertyNameAttribute : Attribute {
+ public ContractPublicPropertyNameAttribute(string name);
+ public string Name { get; }
+ }
+ public sealed class ContractReferenceAssemblyAttribute : Attribute {
+ public ContractReferenceAssemblyAttribute();
+ }
+ public sealed class ContractRuntimeIgnoredAttribute : Attribute {
+ public ContractRuntimeIgnoredAttribute();
+ }
+ public sealed class ContractVerificationAttribute : Attribute {
+ public ContractVerificationAttribute(bool value);
+ public bool Value { get; }
+ }
+ public sealed class PureAttribute : Attribute {
+ public PureAttribute();
+ }
+}
```