e$B9b66@,5A$G$9!#e(B1.9e$B$N%(%s%3!<%G%#%s%0$He(BString#valid_encoding?e$B$K$D$$$F!#e(B
e$B!ZGX7J![e(B
e$BF~NO%A%’%C%/Ey$G!"$"$kJ8;zNs$,$"$k%(%s%3!<%G%#%s%0$NHO0OFb$Ke(B
e$B$$5$^$C$F$$$k$+!“873J$K%A%’%C%/$7$?$$>l9g$,$”$j$^$9!#e(B
e$B!J$$5$^$C$F$$$J$$>l9g$O:FF~NO$r$&$J$,$7$?$j!"!Ve(B?e$B!W$K6/@)E*$Ke(B
e$BCV49$7$?$j$7$^$9!K!#e(B
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e$B$H$$$&$o$1$G!"Nc$($Pe(B String#valid_encoding?
e$B$G873J$J%A%’%C%/$,e(B
e$B$G$-$k$H$&$l$7$$$G$9!#6qBNE*$K$O!"e(BShift_JISe$B$G!"e(BJISe$B$K$J$$J8;ze(B
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e$B$$$C$?6q9g$G$9!#e(B
e$B!&%5%s%W%k%3!<%Ie(B
encoding:shift_jis
str1=“e$B$”$$$&$($*e(B"
p str1.encoding #=> Encoding:Shift_JIS
p str1.valid_encoding? #=> true
str2=“e$B$”$$$&$($*-!-"-#e(B"
p str2.encoding #=> Encoding:Shift_JIS
p str2.valid_encoding? #=>
e$B8=>ue(Btruee$B$@$1$I$3$3$re(Bfalsee$B$K$7$?$$e(B
str3=“e$B$”$$$&$($*-!-"-#e(B"
str3.force_encoding(“Windows-31J”)
p str3.encoding #=> Encoding:Windows-31J
p str3.valid_encoding? #=> true e$B$N$^$^$Ge(BOK
e$B!ZHw9M![e(B
e$B$3$l$C$F!“e(BWindows-31Je$B$,e(BShift_JISe$B$Ne(Breplicae$B$=$N$^$^$G$$$$$N$+e(B
e$B$I$&$+LdBj$K$+$+$o$C$F$/$k$s$G$9$h$M!#>e5-$N$h$&$JM}M3$be(B
e$B$”$C$F!";d$Oe(BWindows-31Je$B$He(BShift_JISe$B$O$^$k$C$-$jF1$8!"$G$O$J$$e(B
e$BJ}$,$$$$$H;W$C$F$$$^$9!#e(B
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e$BLdBj$,=P$F$/$k$H$O;W$$$^$9$,!D!D!#e(B
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e$BL\E*$G$9!#$=$l$,$G$-$k$N$J$i!“e(B String#valid_encoding? e$B0J30$Ne(B
e$B<jCJ$r;H$&$N$G$”$C$F$b9=$$$^$;$s!#e(B
e$B9b66@,5Ae(B ([email protected])
