小编Mic*_*rtz的帖子

是否有一个JavaScript等效于此Python的字符串切片方法？

s1 = 'stackoverflow'
print s1[1:]
# desired output
tackoverflow

var s2 = "stackoverflow";
/* console.log(s2.slice(1,));      this code crashes */

console.log(s2.slice(1, -1));
/* output doesn't print the 'w' */
tackoverflo

当我运行以下代码时,我得到以下输出:

       Var1: 761758
Actual-Var1: 761.758
Result-Var1: 761.75

我期待的是:

Result-Var1 is incorrect size!
       Var1: 761758
Actual-Var1: 761.758
Result-Var1: 761.75

我正在教自己COBOL,我正在使用Michael Coughlan的书,Beginning COBOL for Programmers.他这个ON SIZE ERROR短语的最小例子是在第62页.它似乎很直接,但我无法获得我想要的输出.有什么建议？另外,我正在使用Micro Focus Visual COBOL for Ecplise作为我的IDE.

       Identification Division.
       Program-ID. OnSizeErrorDemo.

       Data Division.
       Working-Storage Section.
         01 Var1 Pic 999V999 Value 761.758.
         01 Actual-Var1 Pic 999.999.
         01 Result-Var1 Pic 999.99.

       Procedure Division.
       Begin.
         Move Var1 To Actual-Var1

         Compute Result-Var1 = Var1
           On Size Error Display "Result-Var1 is incorrect size!"
         End-Compute

         Display "       Var1: ", Var1
         Display …