# Extensions for parallelism, version 2

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< cpp‎ | experimental

The C++ Extensions for Parallelism Version 2, ISO/IEC TS 19570:2018 defines the following new components for the C++ standard library:

### Parallel exceptions

Defined in header `<experimental/exception_list>`
exception_list | exceptions raised during parallel executions (class)

### Execution policies

Defined in header `<experimental/execution_policy>`
unsequenced_policy vector_policy | execution policy types (class)
unseq vec | global execution policy objects (constant)

### Parallel algorithms

| This section is incomplete

### Task Block

| This section is incomplete

### Data-Parallel Types

| This section is incomplete

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