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Closed 3 years ago.
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Isn't that out of order output
QAQ
this is my code
var i=map[int]int{
1:1,
2:2,
3:3,
}
for i2, i3 := range i {
fmt.Println(i2, i3)
}
and the output is
1 1
2 2
3 3
why?
Go maps do not guarantee iteration order. In fact, the order may change from one iteration to the other, and the order of insertion and type-specific value order is not relevant. More info here:
https://blog.golang.org/go-maps-in-action
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How to change string a type value to complex number?
I need to perform arithmetic operations on complex numbers which are passed through command line arguments.
For example:
go run file.go 3-4i + 7+2i
Starting from Go 1.15, there is a ParseComplex function in the strconv package:
https://golang.org/pkg/strconv/#ParseComplex
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can you explain where the mistake is? when I run the program a notification appears like ORA-00936: missing expression
Insert into vemp_10_20 (employee_id,last_name,hire_date,email,job_id,salary) values ('411','Michele',to date ( '17-Sep-2010','DD-MON-RRRR'),'michele#xyz.com','MK_REP','1000');
Function is TO_DATE, not TO DATE (missing underline _).
Also, consider using YYYY format mask, not RRRR (as you specify years in 4-digits format, which is correct).
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I have tried the following:
iconv('ISO-8859-1', 'UTF-8//IGNORE', 'BIG5', $input);
However, it fails and produces this error:
iconv() expects exactly 3 parameters, 4 given
Check the official documentation:
http://php.net/manual/en/function.iconv.php
You're passing an extra argument to the function.
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myhash = {answer: "yes", something: hello, another: "yes"}
myhash.delete[another]
I want to delete the another key-value pair. But, ruby gives me an error saying wrong number of arguments (0 for 1). What's going on?
the method delete is a method, not an element on the hash , and another key is a symbol, so you should call on this form
myhash.delete(:another)
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I'm trying to find the greatest prime number based on a max value...I just want this to print the largest prime number but I can't figure out how to break this loop after printing the first number.
require 'prime'
1000.downto(1) do |i|
while i.prime? do print i
end
end
i am not familiar with ruby but i guess it should work
1000.downto(1) do |i|
if i.prime? then
print i
break
end
end