What does question mark mean in scheme?

predicate procedure
However since we can code information in the name it should contain to the point what it is about, which can be any word or even sentence delimited by hyphens, ending with question mark to indicate that it is indeed a predicate procedure.

What does 3 question marks mean?

Reply. It’s supposed to indicate how much the person’s voice raises at the end of the sentence. If there’s 3 question marks, there voice gets really high at the end.

What does (?) Mean?

(?) is simply a passing note of incertitude at the preceding word (sometimes phrase). I am the tallest(?) in our class. Here this usage indicates that the author is not sure if he/she is really the tallest one.

How do I return true or false in Scheme?

If Is a Special Form The rule is that if always evaluates its first argument. If the value of that argument is true, then if evaluates its second argument and returns its value. If the value of the first argument is false, then if evaluates its third argument and returns that value.

What is false in Scheme?

Scheme provides a special unique object, whose written representation is #f , called false. This object counts as false if it’s the result of a condition expression in an if (or cond ) expression. In most Schemes, this is the only value that counts as false, and all others count as true.

What do 2 question marks mean?

If double question marks are uses it is to emphasise something in return, usually from the shock of the previous thing said. For example, if I said: ‘My dog just died’ (sad, but used for example…) Someone may reply. ‘Really??’

What are the rules of question mark?

A question mark indicates to your readers that your sentence should be read as an inquiry. It is the end mark used in interrogative sentences. Question words like who, when, where, why, what, which, and how indicate that a sentence is a question.

What is A?! Called?

What Is an Interrobang? An interrobang (sometimes called an interabang or exclamation question mark) is a nonstandard double punctuation mark that combines the glyphs and functions of the question mark and exclamation point. The glyph for an interrobang is ‽, but you can also write it as !?,?!, or?!?

What is null in Scheme?

In Scheme, there is one null pointer value, called “the empty list,” which prints as () . (Later, we’ll see why it’s written that way, and why it’s called “the empty list.”) Conceptually, the empty list is a special object, and a “null” pointer is a pointer to this special end-of-list object.

How do I know if I have true in Scheme?

In Scheme, the boolean values true and false are denoted by #t and #f . However, any Scheme value can be treated as a boolean for the purpose of a conditional test. This manual uses the word true to refer to any Scheme value that counts as true, and the word false to refer to any Scheme value that counts as false.

Are double question marks rude?

In general, avoid what could be called aggressive punctuation: the combination of multiple consecutive exclamation points and/or question marks (instead of the usual allotment of one) to demonstrate anger, irritation, or urgency. In business communications, such punctuation can be inflammatory or offensive.

When should a question mark not be used?

You shouldn’t use a question mark because you aren’t asking the question; you are requesting that someone else ask the question. However, if you include a direct question as part of a sentence, then the question would end with a question mark.

Why do we use question mark?

A question mark, also known as an interrogation point or interrogation mark, is a punctuation mark that is used to indicate that a sentence is a question.

What is a mark scheme?

This mark scheme includes any amendments made at the standardisation events which all associates participate in and is the scheme which was used by them in this examination.

Why are some question papers and Mark schemes no longer available?

Some question papers and mark schemes are no longer available after three years, due to copyright restrictions (except for Maths and Science). Teachers can get past papers earlier, from 10 days after the exam, in the Resources tab on Centre Services.

Should examiners mark according to the mark scheme?

Examiners should mark according to the mark scheme not according to their perception of where the grade boundaries may lie. • There is no ceiling on achievement. All marks on the mark scheme should be used appropriately. All the marks on the mark scheme are designed to be awarded.

What is a 2nd grade mark scheme?

2 Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates participate in and is the scheme which was used by them in this examination.