An alias denotes a named type if the type given in the alias declaration is a named type.
</p>

<h3 id="Boolean_types">Boolean types</h3>

<p>
A <i>boolean type</i> represents the set of Boolean truth values
denoted by the predeclared constants <code>true</code>
and <code>false</code>. The predeclared boolean type is <code>bool</code>;
it is a <a href="#Type_definitions">defined type</a>.
</p>

#### kubectl:

  applied when username.claim is set to 'email' is 'claims.?email_verified.orValue(true) == true'. 
  By explicitly comparing the value to true, we let type-checking see the result will be a boolean, 
  and to make sure a non-boolean `email_verified` claim will be caught at runtime. ([#130875](https://github.com/kubernetes/kubernetes/pull/130875), [@aramase](https://github.com/aramase)) [SIG Auth and Release]

* Added the `writable` boolean option to kubeadm config. This option works on a per-volume basis for `ExtraVolumes` config keys. ([#60428](https://github.com/kubernetes/kubernetes/pull/60428), [@rosti](https://github.com/rosti))

- kubeadm: UnifiedControlPlaneImage is replaced by UseHyperKubeImage boolean value. ([#70793](https://github.com/kubernetes/kubernetes/pull/70793), [@rosti](https://github.com/rosti))

- Pod disruption budgets can now be updated and patched. ([#69867](https://github.com/kubernetes/kubernetes/pull/69867), [@davidmccormick](https://github.com/davidmccormick))

- Replaced Boolean-pointer-helper functions with the `k8s.io/utils/ptr` implementations. ([#132794](https://github.com/kubernetes/kubernetes/pull/132794), [@PatrickLaabs](https://github.com/PatrickLaabs)) [SIG API Machinery, Auth, CLI, Node and Testing]

- Introduced a new boolean kubelet flag `--fail-cgroupv1`. ([#126031](https://github.com/kubernetes/kubernetes/pull/126031), [@harche](https://github.com/harche)) [SIG API Machinery and Node]

pt=S.prototype;function kt(e,a,t,s){var n=ua(),r=c().set(s,a);return n[t](r,e)}function Dt(e,a,t){if(m(e)&&(a=e,e=void 0),e=e||"",null!=a)return kt(e,a,t,"month");for(var s=[],n=0;n<12;n++)s[n]=kt(e,n,t,"month");return s}function Tt(e,a,t,s){a=("boolean"==typeof e?m(a)&&(t=a,a=void 0):(a=e,e=!1,m(t=a)&&(t=a,a=void 0)),a||"");var n,r=ua(),d=e?r._week.dow:0,i=[];if(null!=t)return kt(a,(t+d)%7,s,"day");for(n=0;n<7;n++)i[n]=kt(a,(n+d)%7,s,"day");return i}pt.calendar=function(e,a,t){var s=this._calen...

- Removed `kubectl --dry-run` empty default value and boolean values. `kubectl --dry-run` usage must be specified with `--dry-run=(server|client|none)`. ([#105327](https://github.com/kubernetes/kubernetes/pull/105327), [@julianvmodesto](https://github.com/julianvmodesto))