Variables

*agent*

The agent currently running an action on this thread, else nil

*alias-map*

Map from ns alias to ns, if non-nil, it will be used to resolve read-time ns aliases instead of (ns-aliases *ns*). ...

*allow-unresolved-vars*

*assert*

When set to logical false, 'assert' will omit assertion checks in compiled code. Defaults to true.

*backtrack-stack*

*clojure-version*

The version info for Clojure core, as a map containing :major :minor :incremental and :qualifier keys. Feature releas...

*clojurescript*

*command-line-args*

A sequence of the supplied command line arguments, or nil if none were supplied

*compile-files*

Set to true when compiling files, false otherwise.

*compile-path*

Specifies the directory where 'compile' will write out .class files. This directory must be in the classpath for 'comp...

*compiler-options*

A map of keys to options. Note, when binding dynamically make sure to merge with previous value. Supported options: ...

*core-java-api*

*current*

*data-readers*

Map from reader tag symbols to data reader Vars. When Clojure starts, it searches for files named 'data_readers.clj' ...

*data-readers*

Map from reader tag symbols to data reader Vars. Reader tags without namespace qualifiers are reserved for Clojure. ...

*default-data-reader-fn*

When no data reader is found for a tag and *default-data-reader-fn* is non-nil, it will be called with two arguments, ...

*default-data-reader-fn*

When no data reader is found for a tag and *default-data-reader-fn* is non-nil, it will be called with two arguments,...

*depth*

*err*

A java.io.Writer object representing standard error for print operations. Defaults to System/err, wrapped in a PrintW...

*feeling-lucky*

*feeling-lucky-url*

*file*

The path of the file being evaluated, as a String. When there is no file, e.g. in the REPL, the value is not defined.

*flush-on-newline*

When set to true, output will be flushed whenever a newline is printed. Defaults to true.

*fn-loader*

*force*

Overrides the default rules for choosing between logging directly or via an agent. Defaults to nil. See log* for detai...

*in*

A java.io.Reader object representing standard input for read operations. Defaults to System/in, wrapped in a LineNumb...

*initial-report-counters*

*line*

*load-tests*

True by default. If set to false, no test functions will be created by deftest, set-test, or with-test. Use this to...

*local-javadocs*

*locals*

*logger-factory*

An instance satisfying the clojure.tools.logging.impl/LoggerFactory protocol, which allows uniform access to an underl...

*logging-agent*

The default agent used for performing logging when direct logging is disabled. See log* for details.

*match-lookup*

Allow map matching syntax to check for IMatchLookup

*math-context*

*no-backtrack*

Flag to optimize performance over code size.

*ns*

A clojure.lang.Namespace object representing the current namespace.

*open-url-script*

*out*

A java.io.Writer object representing standard output for print operations. Defaults to System/out, wrapped in an Outp...

*print-base*

The base to use for printing integers and rationals.

*print-dup*

When set to logical true, objects will be printed in a way that preserves their type when read in later. Defaults t...

*print-length*

*print-length* controls how many items of each collection the printer will print. If it is bound to logical false, the...

*print-level*

*print-level* controls how many levels deep the printer will print nested objects. If it is bound to logical false, th...

*print-meta*

If set to logical true, when printing an object, its metadata will also be printed in a form that can be read back by ...

*print-miser-width*

The column at which to enter miser style. Depending on the dispatch table, miser style add newlines in more places to t...

*print-namespace-maps*

*print-namespace-maps* controls whether the printer will print namespace map literal syntax. It defaults to false, but...

*print-pprint-dispatch*

The pretty print dispatch function. Use with-pprint-dispatch or set-pprint-dispatch to modify.

*print-pretty*

Bind to true if you want write to use pretty printing

*print-radix*

Print a radix specifier in front of integers and rationals. If *print-base* is 2, 8, or 16, then the radix specifier us...

*print-readably*

When set to logical false, strings and characters will be printed with non-alphanumeric characters converted to the ap...

*print-right-margin*

Pretty printing will try to avoid anything going beyond this column. Set it to nil to have pprint let the line be arbitr...

*print-suppress-namespaces*

Don't print namespaces with symbols. This is particularly useful when pretty printing the results of macro expansions

*read-delim*

*read-eval*

Defaults to true (or value specified by system property, see below) ***This setting implies that the full power of the...

*read-eval*

Defaults to true. ***WARNING*** This setting implies that the full power of the reader is in play, including s...

*reader-resolver*

*recur-present*

In the presence of recur we cannot apply code size optimizations

*remote-javadocs*

*repl*

Bound to true in a repl thread

*report-counters*

*root*

*sb*

*session*

*sh-dir*

*sh-env*

*source-path*

*stack*

*stack-trace-depth*

The maximum depth of stack traces to print when an Exception is thrown during a test. Defaults to nil, which means pr...

*state*

*suppress-read*

*suppress-read*

*syntax-check*

Enable syntax check of match macros

*test-out*

*testing-contexts*

*testing-vars*

*tx-agent-levels*

The set of levels that will require using an agent when logging from within a running transaction. Defaults to #{:info...

*unchecked-math*

While bound to true, compilations of +, -, *, inc, dec and the coercions will be done without overflow checks. While b...

*use-context-classloader*

*var-context*

*vector-type*

Default vector type. Can be rebound allowing emission of custom inline code for vector patterns, for exampl...

*verbose-defrecords*

*warn-on-reflection*

When set to true, the compiler will emit warnings when reflection is needed to resolve Java method calls or field acce...

*warned*

alter-var-root

Atomically alters the root binding of var v by applying f to its current value plus any args

bound-fn

Returns a function defined by the given fntail, which will install the same bindings in effect as in the thread at the...

bound-fn*

Returns a function, which will install the same bindings in effect as in the thread at the time bound-fn* was called a...

declare

defs the supplied var names with no bindings, useful for making forward declarations.

def

Creates and interns a global var.

defonce

defs name to have the root value of the expr iff the named var has no root value, else expr is unevaluated

get-thread-bindings

Get a map with the Var/value pairs which is currently in effect for the current thread.

get-validator

Gets the validator-fn for a var/ref/agent/atom.

intern

Finds or creates a var named by the symbol name in the namespace ns (which can be a symbol or a namespace), setting it...

pop-thread-bindings

Pop one set of bindings pushed with push-binding before. It is an error to pop bindings without pushing before.

push-thread-bindings

WARNING: This is a low-level function. Prefer high-level macros like binding where ever possible. Takes a map of Va...

set-validator!

Sets the validator-fn for a var/ref/agent/atom. validator-fn must be nil or a side-effect-free fn of one argument, whi...

var-get

Gets the value in the var object

var-set

Sets the value in the var object to val. The var must be thread-locally bound.

with-bindings

Takes a map of Var/value pairs. Installs for the given Vars the associated values as thread-local bindings. Then execu...

with-bindings*

Takes a map of Var/value pairs. Installs for the given Vars the associated values as thread-local bindings. Then calls...

binding

binding => var-symbol init-expr Creates new bindings for the (already-existing) vars, with the supplied initial val...

if-let

bindings => binding-form test If test is true, evaluates then with binding-form bound to the value of test, if not...

let

binding => binding-form init-expr binding-form => name, or destructuring-form destructuring-form => map-destructure-...

when-let

bindings => binding-form test When test is true, evaluates body with binding-form bound to the value of test

with-local-vars

varbinding=> symbol init-expr Executes the exprs in a context in which the symbols are bound to vars with per-threa...

meta

Returns the metadata of obj, returns nil if there is no metadata.

type

Returns the :type metadata of x, or its Class if none

alter-meta!

Atomically sets the metadata for a namespace/var/ref/agent/atom to be: (apply f its-current-meta args) f must be f...

vary-meta

Returns an object of the same type and value as obj, with (apply f (meta obj) args) as its metadata.

with-meta

Returns an object of the same type and value as obj, with map m as its metadata.

add-tap

adds f, a fn of one argument, to the tap set. This function will be called with anything sent via tap>. This function ...

add-watch

Adds a watch function to an agent/atom/var/ref reference. The watch fn must be a fn of 4 args: a key, the reference, i...

remove-tap

Remove f from the tap set.

remove-watch

Removes a watch (set by add-watch) from a reference

tap>

sends x to any taps. Will not block. Returns true if there was room in the queue, false if not (dropped).