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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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Functions: FnBoolean</title>
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<div class="section"><h2>Functions: FnBoolean<a name="Functions:_FnBoolean"></a></h2>
<div class="section"><h3>1. Overview<a name="a1._Overview"></a></h3>
<p>
<b><a class="externalLink" href="https://www.op4j.org/apidocs/org/op4j/functions/FnBoolean.html">FnBoolean</a></b> is a <i>function hub class</i>
containing a lot of static methods returning functions that take a <b>Boolean</b> object as its input.
</p>
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<div class="section"><h3>2. Functions<a name="a2._Functions"></a></h3>
<table class="bodyTable" border="0">
<thead><tr class="a"><th>Function name</th><th>Type</th><th width="240px">Params</th><th>Description</th></tr></thead>
<tbody>
<tr class="b"><td><b>and</b></td><td>Function<R,Boolean></td><td>IFunction<X,Boolean> left<br />IFunction<? super R,Boolean> right</td><td><p> Takes two boolean functions (<tt>Function<?,Boolean></tt>) as parameters and returns another one which returns true if both functions return true, and false if not. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="a"><td><b>eq</b></td><td>Function<Object,Boolean></td><td>Boolean object</td><td><p> Determines whether the target object and the specified object are equal by calling the <tt>equals</tt> method on the target object. </p></td></tr>
<tr class="b"><td><b>eq</b></td><td>Function<Object,Boolean></td><td>boolean object</td><td><p> Determines whether the target object and the specified object are equal by calling the <tt>equals</tt> method on the target object. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="a"><td><b>eqBy</b></td><td>Function<X,Boolean></td><td>IFunction<X,?> by<br />Boolean object</td><td><p> Determines whether the result of executing the specified function on the target object and the specified object parameter are equal by calling the <tt>equals</tt> method. </p></td></tr>
<tr class="b"><td><b>eqBy</b></td><td>Function<X,Boolean></td><td>IFunction<X,?> by<br />boolean object</td><td><p> Determines whether the result of executing the specified function on the target object and the specified object parameter are equal by calling the <tt>equals</tt> method. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="a"><td><b>isFalse</b></td><td>Function<Boolean,Boolean></td><td></td><td><p> Returns true if the target object is <tt>Boolean.FALSE</tt>, false if it is <tt>Boolean.TRUE</tt>. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="b"><td><b>isNotNull</b></td><td>Function<Object,Boolean></td><td></td><td><p> Determines whether the target object is null or not. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="a"><td><b>isNotNullBy</b></td><td>Function<X,Boolean></td><td>IFunction<X,?> by</td><td><p> Determines whether the result of executing the specified function on the target object is null or not. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="b"><td><b>isNull</b></td><td>Function<Object,Boolean></td><td></td><td><p> Determines whether the target object is null or not. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="a"><td><b>isNullBy</b></td><td>Function<X,Boolean></td><td>IFunction<X,?> by</td><td><p> Determines whether the result of executing the specified function on the target object is null or not. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="b"><td><b>isTrue</b></td><td>Function<Boolean,Boolean></td><td></td><td><p> Returns true if the target object is <tt>Boolean.TRUE</tt>, false if it is <tt>Boolean.FALSE</tt>. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="a"><td><b>negate</b></td><td>Function<Boolean,Boolean></td><td></td><td><p> Negates the target Boolean, returning Boolean.FALSE if the target object is Boolean.TRUE, and Boolean.TRUE if it is Boolean.FALSE. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="b"><td><b>not</b></td><td>Function<T,Boolean></td><td>IFunction<T, Boolean> function</td><td><p> Takes a boolean function (<tt>Function<?,Boolean></tt>) as a parameter and returns another one which returns true if the specified function returns false, and false if the function returns true. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="a"><td><b>notEq</b></td><td>Function<Object,Boolean></td><td>Boolean object</td><td><p> Determines whether the target object and the specified object are NOT equal by calling the <tt>equals</tt> method on the target object. </p></td></tr>
<tr class="b"><td><b>notEq</b></td><td>Function<Object,Boolean></td><td>boolean object</td><td><p> Determines whether the target object and the specified object are NOT equal by calling the <tt>equals</tt> method on the target object. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="a"><td><b>notEqBy</b></td><td>Function<X,Boolean></td><td>IFunction<X,?> by<br />Boolean object</td><td><p> Determines whether the result of executing the specified function on the target object and the specified object parameter are NOT equal by calling the <tt>equals</tt> method. </p></td></tr>
<tr class="b"><td><b>notEqBy</b></td><td>Function<X,Boolean></td><td>IFunction<X,?> by<br />boolean object</td><td><p> Determines whether the result of executing the specified function on the target object and the specified object parameter are NOT equal by calling the <tt>equals</tt> method. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="a"><td><b>or</b></td><td>Function<R,Boolean></td><td>IFunction<X,Boolean> left<br />IFunction<? super R,Boolean> right</td><td><p> Takes two boolean functions (<tt>Function<?,Boolean></tt>) as parameters and returns another one which returns true if any of the functions returns true, and false if not. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="b"><td><b>toBigDecimal</b></td><td>Function<Boolean,BigDecimal></td><td></td><td><p> Converts a Boolean to a BigDecimal. true = 1, false = 0. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="a"><td><b>toBigInteger</b></td><td>Function<Boolean,BigInteger></td><td></td><td><p> Converts a Boolean to a BigInteger. true = 1, false = 0. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="b"><td><b>toByte</b></td><td>Function<Boolean,Byte></td><td></td><td><p> Converts a Boolean to a Byte. true = 1, false = 0. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="a"><td><b>toDouble</b></td><td>Function<Boolean,Double></td><td></td><td><p> Converts a Boolean to a Double. true = 1, false = 0. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="b"><td><b>toFloat</b></td><td>Function<Boolean,Float></td><td></td><td><p> Converts a Boolean to a Float. true = 1, false = 0. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="a"><td><b>toInteger</b></td><td>Function<Boolean,Integer></td><td></td><td><p> Converts a Boolean to a Integer. true = 1, false = 0. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="b"><td><b>toLong</b></td><td>Function<Boolean,Long></td><td></td><td><p> Converts a Boolean to a Long. true = 1, false = 0. </p></td></tr>
<tr class="" bgcolor="#A4A4A4"><td bgcolor="#A4A4A4" colspan="4"></td></tr>
<tr class="a"><td><b>toShort</b></td><td>Function<Boolean,Short></td><td></td><td><p> Converts a Boolean to a Short. true = 1, false = 0. </p></td></tr>
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