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Dynamically select data frame columns using $ and a character value
...is a reproducible example below:
# set seed for reproducibility
set.seed(123)
df <- data.frame( col1 = sample(5,10,repl=T) , col2 = sample(5,10,repl=T) , col3 = sample(5,10,repl=T) )
# We want to sort by 'col3' then by 'col1'
sort_list <- c("col3","col1")
# Use 'do.call' to call order. S...
Converting String to Int with Swift
...
swift 4.0
let stringNumber = "123"
let number = Int(stringNumber) //here number is of type "Int?"
//using Forced Unwrapping
if number != nil {
//string is converted to Int
}
you could also use Optional Binding other than forced binding.
eg...
What is the coolest thing you can do in
... commands you can use. Check http://www.microsoft.com/technet/scriptcenter/funzone/agent.mspx for more information.
EDIT 2011-09-02
I recently discovered that Microsoft Agent is not natively installed on Windows 7. However it is offered as a separate download here. I have not tested this so cannot ...
How to compare two floating point numbers in Bash?
...result back to the shell in a proper, machine-readable way. if awk -v n1="123.456" -v n2="3.14159e17" 'BEGIN { exit (n1 <= n2) }' /dev/null; then echo bigger; else echo not; fi ... though note how the condition is inverted (the exit status 0 means success to the shell).
– t...
ASP.NET Identity reset password
...();//"<YourLogicAssignsRequestedUserId>";
String newPassword = "test@123"; //"<PasswordAsTypedByUser>";
String hashedNewPassword = UserManager.PasswordHasher.HashPassword(newPassword);
ApplicationUser cUser = await store.FindByIdAsync(userId);
await store.SetPasswordH...
Specifically, what's dangerous about casting the result of malloc?
... but forgetting to include stdlib.h. Compilers may assume that malloc is a function returning int, therefore converting the void* pointer actually returned by malloc to int and then to your pointer type due to the explicit cast. On some platforms, int and pointers may take up different numbers of by...
Convert a number range to another range, maintaining ratio
...edited Dec 16 '14 at 5:02
Rizier123
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answered Dec 16 '14 at 4:40
...
Disabled form inputs do not appear in the request
...;form action="/Media/Add">
<input type="hidden" name="Id" value="123" />
<input type="textbox" name="Percentage" value="100" readonly/>
</form>
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Set type for function parameters?
...a+b;
});
// call the function, with an invalid second argument
myFunc(123, '456')
// ERROR! Uncaught Error: TypeError : Expecting a Number in argument 2
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How to check if character is a letter in Javascript?
...etter = (n >= 65 && n < 91) || (n >= 97 && n < 123);
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