* other collection type like {@link List}, but it may be unexpected to the user of a multiset.
   *
   * @param elements the collection of elements to be checked for containment in this multiset
   * @return {@code true} if this multiset contains at least one occurrence of each element
   *     contained in {@code elements}
   * @throws NullPointerException if {@code elements} is null

focus~.custom-control-label::before,.was-validated .custom-control-input:valid:focus~.custom-control-label::before{box-shadow:0 0 0 .2rem rgba(40,167,69,.25)}.custom-control-input.is-valid:focus:not(:checked)~.custom-control-label::before,.was-validated .custom-control-input:valid:focus:not(:checked)~.custom-control-label::before{border-color:#28a745}.custom-file-input.is-valid~.custom-file-label,.was-validated .custom-file-input:valid~.custom-file-label{border-color:#28a745}.custom-file-input.i...

e[c].src)){this.lexer.inlineQueue[c].src=this.lexer.inlineQueue[c].src.replace(this.rules.other.listReplaceTask,"");break}}let p=this.rules.other.listTaskCheckbox.exec(u.raw);if(p){let c={type:"checkbox",raw:p[0]+" ",checked:p[0]!=="[ ]"};u.checked=c.checked,i.loose?u.tokens[0]&&["paragraph","text"].includes(u.tokens[0].type)&&"tokens"in u.tokens[0]&&u.tokens[0].tokens?(u.tokens[0].raw=c.raw+u.tokens[0].raw,u.tokens[0].text=c.raw+u.tokens[0].text,u.tokens[0].tokens.unshift(c)):u.tokens.unshift({...

	g()
}
</pre>

<p>
it can happen that <code>g</code> prints <code>2</code> and then <code>0</code>.
</p>

<p>
This fact invalidates a few common idioms.
</p>

<p>
Double-checked locking is an attempt to avoid the overhead of synchronization.
For example, the <code>twoprint</code> program might be
incorrectly written as:
</p>

<pre>
var a string
var done bool

func setup() {

 *   <li>Each lock adds (and removes) itself to/from a ThreadLocal Set of acquired locks when the
 *       Thread acquires its first hold (and releases its last remaining hold).
 *   <li>Before the lock is acquired, the lock is checked against the current set of acquired
 *       locks---to each of the acquired locks, an edge from the soon-to-be-acquired lock is either
 *       verified or created.

e.toggle=function(){var t=!0,e=!0,n=o.default(this._element).closest('[data-toggle="buttons"]')[0];if(n){var i=this._element.querySelector(y);if(i){if("radio"===i.type)if(i.checked&&this._element.classList.contains(_))t=!1;else{var a=n.querySelector(".active");a&&o.default(a).removeClass(_)}t&&("checkbox"!==i.type&&"radio"!==i.type||(i.checked=!this._element.classList.contains(_)),this.shouldAvoidTriggerChange||o.default(i).trigger("change")),i.focus(),e=!1}}this._element.hasAttribute("disabled")||this._...

.slider-selection {\n  background: #343a40;\n}\n\n.icheck-primary > input:first-child:not(:checked):not(:disabled):hover + label::before,\n.icheck-primary > input:first-child:not(:checked):not(:disabled):hover + input[type=\"hidden\"] + label::before {\n  border-color: #007bff;\n}\n\n.icheck-primary > input:first-child:not(:checked):not(:disabled):focus + label::before,\n.icheck-primary > input:first-child:not(:checked):not(:disabled):focus + input[type=\"hidden\"] + label::before {\n  border-color: #0...

                  (SecureDirectoryStream<Path>) parent,
                  /*
                   * requireNonNull is safe because paths have file names when they have parents,
                   * and we checked for a parent at the beginning of the method.
                   */
                  requireNonNull(path.getFileName()));
        }
      }

      if (!sdsSupported) {

    // * Everything with (index < to) should be kept.
    // * Everything with (to <= index < from) should be removed.
    // * The element with (index == from) should be kept.
    // * Everything with (index > from) has not been checked yet.

    // Check from the end of the list backwards (minimize expected cost of
    // moving elements when remove() is called). Stop before 'from' because
    // we already know that should be kept.

="done",Et={onCheck:function(e){return e},onUnCheck:function(e){return e}},Lt=function(){function e(e,t){this._config=t,this._element=e,this._init()}var t=e.prototype;return t.toggle=function(e){e.parents("li").toggleClass(Ft),n.default(e).prop("checked")?this.check(e):this.unCheck(n.default(e))},t.check=function(e){this._config.onCheck.call(e)},t.unCheck=function(e){this._config.onUnCheck.call(e)},t._init=function(){var e=this,t=this._element;t.find("input:checkbox:checked").parents("li").toggl...