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    std::min

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    <metanoindex/>

     
    C++
     
    Algoritmo libreria
    Funzioni
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    Functions
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    Non modifica le operazioni di sequenza
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    Non-modifying sequence operations
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    Modifica delle operazioni di sequenza
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    Modifying sequence operations
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    Partizionamento operazioni
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    Partitioning operations
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    Ordinamento delle operazioni (su intervalli ordinati)
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    Sorting operations (on sorted ranges)
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    Binarie (le operazioni di ricerca sui campi ordinati)
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    Binary search operations (on sorted ranges)
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    Impostare le operazioni (su intervalli ordinati)
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    Set operations (on sorted ranges)
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    Heap operazioni
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    Heap operations
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    Minimo / massimo le operazioni
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    Minimum/maximum operations
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    Operazioni numeriche
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    Numeric operations
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    Libreria C
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    <tbody> </tbody>
    Elemento definito nell'header <algorithm>
    template< class T > const T& min( const T& a, const T& b );
    		 (1)
    template< class T, class Compare > const T& min( const T& a, const T& b, Compare comp );
    		 (2)
    template< class T > T min( std::initializer_list<T> ilist);
    		 (3) (dal C++11)
    template< class T, class Compare > T min( std::initializer_list<T> ilist, Compare comp );
    		 (4) (dal C++11)

    1-2)

    Restituisce il più piccolo dei due valori.
    Original:
    Returns the smaller of the two values.
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    3-4)

    Restituisce il più piccolo dei valori ilist inizializzatore lista.
    Original:
    Returns the smallest of the values in initializer list ilist.
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    I (1,3) versioni utilizzano operator< per confrontare i valori, i (2,4) versioni utilizzare la funzione di confronto dato comp.
    Original:
    The (1,3) versions use operator< to compare the values, the (2,4) versions use the given comparison function comp.
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    Parametri

    a, b -
    i valori da confrontare
    Original:
    the values to compare
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    ilist -
    inizializzatore lista con i valori da confrontare
    Original:
    initializer list with the values to compare
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    cmp - comparison function which returns ​true if if a is less than b.

    The signature of the comparison function should be equivalent to the following:

    bool cmp(const Type1 &a, const Type2 &b);

    The signature does not need to have const &, but the function must not modify the objects passed to it.
    The types Type1 and Type2 must be such that an object of type T can be implicitly converted to both of them. ​

    Type requirements
    -
    T must meet the requirements of LessThanComparable. for the overloads (1) and (3)
    -
    T must meet the requirements of CopyConstructible. for the overloads (3) and (4)

    Valore di ritorno

    1-2)

    Il più piccolo dei a e b. Se i valori sono equivalenti, ritorna a.
    Original:
    The smaller of a and b. If the values are equivalent, returns a.
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    3-4)

    Il valore più piccolo ilist. Se i valori sono diversi equivalenti al più piccolo, restituisce il valore più a sinistra come.
    Original:
    The smallest value in ilist. If several values are equivalent to the smallest, returns the leftmost such value.
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    Complessità

    1-2)

    Constant
    Original:
    Constant
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    3-4)

    Lineare in ilist.size()
    Original:
    Linear in ilist.size()
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    Possibile implementazione

    First version 
    template<class T> 
const T& min(const T& a, const T& b)
{
    return (a < b) ? a : b;
}
    Second version 
    template<class T, class Compare> 
const T& min(const T& a, const T& b, Compare comp)
{
    return (comp(a, b)) ? a : b;
}
    Third version 
    template<class T>
T min( std::initializer_list<T> ilist)
{
    return *std::min_element(ilist.begin(), ilist.end());
}
    Fourth version 
    template<class T, class Compare>
T min(std::initializer_list<T> ilist, Compare comp)
{
    return *std::min_element(ilist.begin(), ilist.end(), comp);
}

    Esempio

    #include <algorithm>
#include <iostream>
 
int main()
{
    std::cout << "smaller of 1 and 9999: " << std::min(1, 9999) << '\n';
    std::cout << "smaller of 'a' and 'b': " << std::min('a', 'b') << '\n';
    std::cout << "smaller of 3.5 and 2.5: " << std::min(3.5, 2.5) << '\n';
}

    Output: 

    smaller of 1 and 9999: 1
smaller of 'a' and 'b': a
smaller of 3.5 and 2.5: 2.5
    This section is incomplete

    Vedi anche
    restituisce il più grande dei due elementi
    Original:
    returns the larger of two elements
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    (funzione di modello) [modifica]
    (C++11)
    restituisce l'. più grande e più piccolo dei due elementi
    Original:
    returns the larger and the smaller of two elements
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    (funzione di modello) [modifica]
    restituisce l'elemento più piccolo in un intervallo
    Original:
    returns the smallest element in a range
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    (funzione di modello) [modifica]