Namespace: go.std.expvar

v1.0

Contents

• Summary
• Index
• Constants
• Variables
• Functions, Macros, and Special Forms
• Types

Summary

Provides a low-level interface to the expvar package.

Package expvar provides a standardized interface to public variables, such
as operation counters in servers. It exposes these variables via HTTP at
/debug/vars in JSON format.

Operations to set or modify these public variables are atomic.

In addition to adding the HTTP handler, this package registers the
following variables:

cmdline os.Args
memstats runtime.Memstats

The package is sometimes only imported for the side effect of
registering its HTTP handler and the above variables. To use it
this way, link this package into your program:
import _ "expvar"

Index

• *Float
• *Func
• *Int
• *KeyValue
• *Map
• *String
• Float
• Func
• Get
• Handler
• Int
• KeyValue
• Map
• NewFloat
• NewInt
• NewMap
• NewString
• Publish
• String
• Var
• arrayOfFloat
• arrayOfFunc
• arrayOfInt
• arrayOfKeyValue
• arrayOfMap
• arrayOfString
• arrayOfVar

Legend

Constant Variable Function Macro Special form Type GoVar Receiver/Method

Constants

Constants are variables with :const true in their metadata. Joker currently does not recognize them as special; as such, it allows redefining them or their values.

(None.)

Variables

(None.)

Functions, Macros, and Special Forms

• Get

  Function v1.0

  (Get name)
  

  Get retrieves a named exported variable. It returns nil if the name has
  not been registered.
  
  Go input arguments: (name string)
  
  Go returns: Var
  
  Joker input arguments: [^String name]
  
  Joker returns: ^Var

• Handler

  Function v1.0

  (Handler)
  

  Handler returns the expvar HTTP Handler.
  
  This is only needed to install the handler in a non-standard location.
  
  Go returns: net/http.Handler
  
  Joker input arguments: []
  
  Joker returns: ^go.std.net.http/Handler

• NewFloat

  Function v1.0

  (NewFloat name)
  

  Go input arguments: (name string)
  
  Go returns: *Float
  
  Joker input arguments: [^String name]
  
  Joker returns: ^*Float

• NewInt

  Function v1.0

  (NewInt name)
  

  Go input arguments: (name string)
  
  Go returns: *Int
  
  Joker input arguments: [^String name]
  
  Joker returns: ^*Int

• NewMap

  Function v1.0

  (NewMap name)
  

  Go input arguments: (name string)
  
  Go returns: *Map
  
  Joker input arguments: [^String name]
  
  Joker returns: ^*Map

• NewString

  Function v1.0

  (NewString name)
  

  Go input arguments: (name string)
  
  Go returns: *String
  
  Joker input arguments: [^String name]
  
  Joker returns: ^*String

• Publish

  Function v1.0

  (Publish name v)
  

  Publish declares a named exported variable. This should be called from a
  package's init function when it creates its Vars. If the name is already
  registered then this will log.Panic.
  
  Go input arguments: (name string, v Var)
  
  Joker input arguments: [^String name, ^Var v]

Types

• *Float

  Concrete Type v1.0

  Float is a 64-bit float variable that satisfies the Var interface.
  

• Add

  Receiver for *Float v1.0

  ([delta])
  

  Add adds delta to v.
  

• Set

  Receiver for *Float v1.0

  ([value])
  

  Set sets v to value.
  

• String

  Receiver for *Float v1.0

  ([])
  

• Value

  Receiver for *Float v1.0

  ([])
  

• *Func

  Concrete Type v1.0

  Func implements Var by calling the function
  and formatting the returned value using JSON.
  

• *Int

  Concrete Type v1.0

  Int is a 64-bit integer variable that satisfies the Var interface.
  

• Add

  Receiver for *Int v1.0

  ([delta])
  

• Set

  Receiver for *Int v1.0

  ([value])
  

• String

  Receiver for *Int v1.0

  ([])
  

• Value

  Receiver for *Int v1.0

  ([])
  

• *KeyValue

  Concrete Type v1.0

  KeyValue represents a single entry in a Map.
  

• *Map

  Concrete Type v1.0

  Map is a string-to-Var map variable that satisfies the Var interface.
  

• Add

  Receiver for *Map v1.0

  ([key delta])
  

  Add adds delta to the *Int value stored under the given map key.
  

• AddFloat

  Receiver for *Map v1.0

  ([key delta])
  

  AddFloat adds delta to the *Float value stored under the given map key.
  

• Delete

  Receiver for *Map v1.0

  ([key])
  

  Delete deletes the given key from the map.
  

• Get

  Receiver for *Map v1.0

  ([key])
  

• Init

  Receiver for *Map v1.0

  ([])
  

  Init removes all keys from the map.
  

• Set

  Receiver for *Map v1.0

  ([key av])
  

• String

  Receiver for *Map v1.0

  ([])
  

• *String

  Concrete Type v1.0

  String is a string variable, and satisfies the Var interface.
  

• Set

  Receiver for *String v1.0

  ([value])
  

• String

  Receiver for *String v1.0

  ([])
  

  String implements the Var interface. To get the unquoted string
  use Value.
  

• Value

  Receiver for *String v1.0

  ([])
  

• Float

  Concrete Type v1.0

  Float is a 64-bit float variable that satisfies the Var interface.
  

• Func

  Concrete Type v1.0

  Func implements Var by calling the function
  and formatting the returned value using JSON.
  

• String

  Receiver for Func v1.0

  ([])
  

• Value

  Receiver for Func v1.0

  ([])
  

• Int

  Concrete Type v1.0

  Int is a 64-bit integer variable that satisfies the Var interface.
  

• KeyValue

  Concrete Type v1.0

  KeyValue represents a single entry in a Map.
  

• Map

  Concrete Type v1.0

  Map is a string-to-Var map variable that satisfies the Var interface.
  

• String

  Concrete Type v1.0

  String is a string variable, and satisfies the Var interface.
  

• Var

  Abstract Type v1.0

  Var is an abstract type for all exported variables.
  

• String

  Method for Var v1.0

  ([])
  

• arrayOfFloat

  Concrete Type v1.0

  Float is a 64-bit float variable that satisfies the Var interface.
  

• arrayOfFunc

  Concrete Type v1.0

  Func implements Var by calling the function
  and formatting the returned value using JSON.
  

• arrayOfInt

  Concrete Type v1.0

  Int is a 64-bit integer variable that satisfies the Var interface.
  

• arrayOfKeyValue

  Concrete Type v1.0

  KeyValue represents a single entry in a Map.
  

• arrayOfMap

  Concrete Type v1.0

  Map is a string-to-Var map variable that satisfies the Var interface.
  

• arrayOfString

  Concrete Type v1.0

  String is a string variable, and satisfies the Var interface.
  

• arrayOfVar

  Concrete Type v1.0

  Var is an abstract type for all exported variables.