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Provides functional interfaces for most two-argument functions
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package net.mintern.functions.binary.checked;

/**
 * An operation of type {@code (char, U) -> double}.
 *
 * @param  the type of argument 2
 * @param  the {@code Exception} type that the operation may throw
 */
@FunctionalInterface
public interface CharObjToDblE {

    /**
     * Performs this operation.
     *
     * @param ch argument 1
     * @param u argument 2
     * @return the result of the operation
     * @throws E if the operation cannot be completed
     */
    double call(char ch, U u) throws E;

    /**
     * Binds {@code (ch)} to the beginning of {@code f}, returning a new function
     * of type {@code (U) -> double}.
     *
     * @param  the type of argument 2
     * @param  the {@code Exception} type that the operation may throw
     * @param f the unbound function
     * @param ch argument 1
     * @return a new function {@code (U u) -> double} that calls
     *      {@code f.call(ch, u)} and returns the result.
     */
    static  net.mintern.functions.unary.checked.ObjToDblE
    bind(CharObjToDblE f, char ch) {
        return (u) -> f.call(ch, u);
    }

    /**
     * Binds {@code (ch)} to the beginning of {@code this}, returning a new function
     * of type {@code (U) -> double}.
     *
     * @param ch argument 1
     * @return a new function {@code (U u) -> double} that calls
     *      {@code this.call(ch, u)} and returns the result.
     */
    default net.mintern.functions.unary.checked.ObjToDblE bind(char ch) {
        return CharObjToDblE.bind(this, ch);
    }

    /**
     * Binds {@code (u)} to the end of {@code f}, returning a new function
     * of type {@code (char) -> double}.
     *
     * @param  the type of argument 2
     * @param  the {@code Exception} type that the operation may throw
     * @param f the unbound function
     * @param u argument 2
     * @return a new function {@code (char ch) -> double} that calls
     *      {@code f.call(ch, u)} and returns the result.
     */
    static  net.mintern.functions.unary.checked.CharToDblE
    rbind(CharObjToDblE f, U u) {
        return (ch) -> f.call(ch, u);
    }

    /**
     * Binds {@code (u)} to the end of {@code this}, returning a new function
     * of type {@code (char) -> double}.
     *
     * @param u argument 2
     * @return a new function {@code (char ch) -> double} that calls
     *      {@code this.call(ch, u)} and returns the result.
     */
    default net.mintern.functions.unary.checked.CharToDblE rbind(U u) {
        return CharObjToDblE.rbind(this, u);
    }

    /**
     * Binds {@code (ch, u)} to {@code f}, returning a new function
     * of type {@code () -> double}.
     *
     * @param  the type of argument 2
     * @param  the {@code Exception} type that the operation may throw
     * @param f the unbound function
     * @param ch argument 1
     * @param u argument 2
     * @return a new function {@code () -> double} that calls
     *      {@code f.call(ch, u)} and returns the result.
     */
    static  net.mintern.functions.nullary.checked.NilToDblE
    bind(CharObjToDblE f, char ch, U u) {
        return () -> f.call(ch, u);
    }

    /**
     * Binds {@code (ch, u)} to {@code this}, returning a new function
     * of type {@code () -> double}.
     *
     * @param ch argument 1
     * @param u argument 2
     * @return a new function {@code () -> double} that calls
     *      {@code this.call(ch, u)} and returns the result.
     */
    default net.mintern.functions.nullary.checked.NilToDblE bind(char ch, U u) {
        return CharObjToDblE.bind(this, ch, u);
    }
}