RE: String to number
- To: mathgroup at smc.vnet.net
- Subject: [mg73192] RE: [mg73174] String to number
- From: "David Annetts" <davidannetts at aapt.net.au>
- Date: Wed, 7 Feb 2007 04:58:04 -0500 (EST)
- References: <200702060819.DAA24596@smc.vnet.net>
Hi Jose,
> The ToString command generates a string from an expression.
> Is there a similar command which generates numbers from
> strings? What I mean by this is: is there a command (let's
> call it ToNumber) such that
>
> ToNumber["12"]
>
> generates the number 12?
There is
ToExpression[String]
And you can also
Read[StringToStream[String], Number]
So, given how easy the first option is, why would you use the second?
Try
b = "12e3";
ToExpression@b
Read[StringToStream@b, Number]
Head[#] & /@ {%, %%}
You can also use
First@Import[StringToStream["12"], "List"]
Regards,
Dave.
- References:
- String to number
- From: José Carlos Santos <jcsantos@fc.up.pt>
- String to number