Re: Shingle Color Choice. Just some additional food for thought from the FSEC. This is just one paragraph out of a 67 page report. I disagree with the final findings of this labratory approach method of determining heat gain or loss dependant upon shingle color alone.
Definition of concrete. 1 : naming a real thing or class of things the word poem is concrete, poetry is abstract. 2 : formed by coalition of particles into one solid mass. 3a : characterized by or belonging to immediate experience of actual things or eventsb : specific, particular a concrete proposalc : real, tangible concrete evidence.
That is, a variable name which can be set and used dynamically. A normal variable is set with a statement such as: A variable variable takes the value of a variable and treats that as the name of a variable. In the above example, hello, can be used as the name of a variable by using two dollar signs.i.e. At this point two variables have been defined and stored in the PHP symbol tree:with contents hello and. with contents world. variable variable takes the value of a variable and treats that as the name of a variable. In the above example, hello, can be used as the name of a variable by using two dollar signs.