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I'm getting this compile warning:
this expression will fail with ArithmeticError
from this code:
#seconds 300
#to_millis 1000
#seconds * #to_millis
I tried adding:
#seconds 300
#to_millis 1000
if is_integer(#seconds) and is_integer(#to_millis) do
#seconds * #to_millis
end
is the problem that it could overflow? What is the correct way of handling this?
* EDIT *
In my actual code, these variables are coming from config files - something with the config is wrong and they are coming back nil so that is the problem. I think this can be closed since it's not an elixir problem
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I working with a csv that has 234 rows. I thought the length() function was supposed to return the number of rows in my csv, but it returns a much larger number. It gives me 1046860. Does the length function not do what I think it does? What is going on?
I just wanted to double check the length and haven't run any other code yet other than setting up my working directory and attaching a file (Cat6 <- read.csv("Category6.csv")).
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I am trying to compute this in R
When I tried
exp(1)^ln(1.89)/10
I get the error: Error in ln(1.89) : could not find function "ln"
I was wondering if ln is ^
I tried exp(1)^(1.89/10) but I get a value of 1.208041 and the answer should be 1.066.
Am I translating the equation into R correctly?
log() is the function you are looking for
T_val <- 2 # some value
exp(log(1.89) / 10 * T_val)
You should log and not ln. Moreover, parenthesis are important due to operator precedence (^ versus / and *).
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I trying to use following piece code in R Studio and I'm expecting a result that calculates b for 1:3 times.
for(b in 1:3){+cat(b,"+",b,"=",b+b, "\n")+}
However I keep getting an error:
Error: unexpected '}' in: "cat(b,"+",b,"=",b+b, "\n")+}"
Can anyone help please?
It expects something to add, but there is nothing to the right hand side of +.
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I have an error
> for (i in 1:(cutoff_size-1)){work$group[i]=rep(c(0,1),c([i]-1,cutoff_size-[i]-1))}
Error: unexpected '[' in:"for (i in 1:(cutoff_size-1)){work$group[i]=rep(c(0,1),c(["
'cutoff_size' is numeric.
How can I solve this problem?
for (i in 1:(cutoff_size-1)){work$group[i]=rep(c(0,1),c(i-1,cutoff_size-i-1))}
this is probably what you're looking for.
[] are used to refer to position in array/data table/list.
If you're using it in a mathematical operation, you do not need the [] around the i.
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I am getting error on following lines of code...plz help.
Index (zero based) must be greater than or equal to zero and less than the size of the argument list.
string order1= string.Format ("exec a_add_user '{0}','{1}','{2}','{3}','{4}','{5}','{6}','{7}','{8}','{9}','{10}'",TextBox_first_name.Text ,TextBox_last_name.Text ,TextBox_user_name.Text ,TextBox_password.Text ,DropDownList_telephone_code.SelectedValue +TextBox_telephone_no.Text ,DropDownList_mobile_code.SelectedValue +TextBox_mobile_no.Text ,RadioButtonList_gender.SelectedValue ,DropDownList_country.SelectedValue ,DropDownList_city.SelectedValue ,TextBox_address.Text);
You're specifying 11 format items but have 10 strings you're trying to append.