# std::placeholders Symbol Index

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< cpp‎ | symbol index

This page tries to list all the symbols that are available from the standard library in the namespace std::placeholders. The symbols are written as follows:

- Function names with `()`.
- Templates with `<>`.

##

> `_`

### _ (underscore)

`_1, _2, ..., _N` (since C++11)

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