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| All the world's a stage, | ||
| And all the men and women merely players; | ||
| They have their exits and their entrances, | ||
| And one man in his time plays many parts, | ||
| His acts being seven ages. At first, the infant, | ||
| Mewling and puking in the nurse's arms. | ||
| Then the whining schoolboy, with his satchel | ||
| And shining morning face, creeping like snail | ||
| Unwillingly to school. And then the lover, | ||
| Sighing like furnace, with a woeful ballad | ||
| Made to his mistress' eyebrow. Then a soldier, | ||
| Full of strange oaths and bearded like the pard, | ||
| Jealous in honor, sudden and quick in quarrel, | ||
| Seeking the bubble reputation | ||
| Even in the cannon's mouth. And then the justice, | ||
| In fair round belly with good capon lined, | ||
| With eyes severe and beard of formal cut, | ||
| Full of wise saws and modern instances; | ||
| And so he plays his part. The sixth age shifts | ||
| Into the lean and slippered pantaloon, | ||
| With spectacles on nose and pouch on side; | ||
| His youthful hose, well saved, a world too wide | ||
| For his shrunk shank, and his big manly voice, | ||
| Turning again toward childish treble, pipes | ||
| And whistles in his sound. Last scene of all, | ||
| That ends this strange eventful history, | ||
| Is second childishness and mere oblivion, | ||
| Sans teeth, sans eyes, sans taste, sans everything. | ||
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| std::to_string | ||
| C++ Strings library std::basic_string | ||
| Defined in header <string> | ||
| std::string to_string( int value ); | ||
| std::string to_string( long value ); | ||
| std::string to_string( long long value ); | ||
| std::string to_string( unsigned value ); | ||
| std::string to_string( unsigned long value ); | ||
| std::string to_string( unsigned long long value ); | ||
| std::string to_string( float value ); | ||
| std::string to_string( double value ); | ||
| std::string to_string( long double value ); | ||
| Converts a numeric value to std::string. | ||
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| Let buf be an internal to the conversion functions buffer, sufficiently large to contain the result of conversion. | ||
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| 1) Converts a signed integer to a string as if by std::sprintf(buf, "%d", value). | ||
| 2) Converts a signed integer to a string as if by std::sprintf(buf, "%ld", value). | ||
| 3) Converts a signed integer to a string as if by std::sprintf(buf, "%lld", value). | ||
| 4) Converts an unsigned integer to a string as if by std::sprintf(buf, "%u", value). | ||
| 5) Converts an unsigned integer to a string as if by std::sprintf(buf, "%lu", value). | ||
| 6) Converts an unsigned integer to a string as if by std::sprintf(buf, "%llu", value). | ||
| 7,8) Converts a floating point value to a string as if by std::sprintf(buf, "%f", value). | ||
| 9) Converts a floating point value to a string as if by std::sprintf(buf, "%Lf", value). | ||
| (until C++26) | ||
| 1-9) Converts a numeric value to a string as if by std::format("{}", value). | ||
| (since C++26) | ||
| Parameters | ||
| Return value | ||
| A string holding the converted value. | ||
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| Exceptions | ||
| May throw std::bad_alloc from the std::string constructor. | ||
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| Notes | ||
| With floating point types std::to_string may yield unexpected results as the number of significant digits in the returned string can be zero, see the example. | ||
| The return value may differ significantly from what std::cout prints by default, see the example. | ||
| std::to_string relies on the current C locale for formatting purposes, and therefore concurrent calls to std::to_string from multiple threads may result in partial serialization of calls. | ||
| The results of overloads for integer types do not rely on the current C locale, and thus implementations generally avoid access to the current C locale in these overloads for both correctness and performance. However, such avoidance is not guaranteed by the standard. | ||
| (until C++26) | ||
| C++17 provides std::to_chars as a higher-performance locale-independent alternative. |
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