False, a. 1. Uttering falsehood; unbelievable; given to deceit; dishnest; as, a false witness.… … The Collaborative International Dictionary of English
false- adj 1: not genuine, authentic, or legitimate compare counterfeit 2 a: not true or correct; esp: intentionally or knowingly untrue or incorrectly injured by false accusations b: intended to mislead or deceive: decept … Law dictionary
false- W3S3 adj ▬▬▬▬▬▬▬ 1¦(untrue)¦ 2¦(wrong)¦ 3¦(not real)¦ 4¦(not sincere)¦ 5 false economy 6 under false pretences 7 false move/step 8 false imprisonment/arrest ▬▬▬▬▬▬▬ adj. false, falsest 1. not true; in error; incorrect; mistaken 2. untruthful; lying; dishonest 3. disloyal; unfaithful adjective ** 1.) not true: The report was dismissed as totally false. a false statement/claim/accusation ─ opposite TRUE 2.) made to look like something real: ARTIFICIAL: false eyelashes a) not real and intended to trick people: a… … Usage of the words and phrases in modern English
false- adjective 1. not true or real, but intended to look real in order to deceive people: false and misleading advertisements Firms issuing false certificates might be subject to lawsuits. 2. a false economy something that you... ... Financial and business terms
This article is about a Unix utility. An article about an esoteric programming language is called FALSE. false (translated from English as “false”) UNIX compatible console command operating systems, whose only action is to return the value 1, ... ... Wikipedia
False- is the antonym of the adjective true.False is the 2nd album of Gorefest, False (album).False may also refer to: * FALSE, an esoteric stack oriented programming language * false, a Unix utilityee also* Contradiction * Falsity * Lie * Falsework, a... ... Wikipedia
false- fȯls adj, fals·er; fals·est 1) not corresponding to truth or reality a test for HIV which gave false results 2) artificially made false teeth 3) of a kind related to or resembling another kind that is usu. designated by the... ... Medical dictionary
Books
- False Delicacy, a Comedy, Kelly Hugh. The book is a reprint edition. Despite the fact that serious work has been done to restore the original quality of the publication, some pages may contain...
- False Dmitri, a Russian romance and tragedy described by British eye-witnesses, 1604-1612, Howe Sonia E. The book is a reprint edition. Despite the fact that serious work has been done to restore the original quality of the publication, some pages may contain...
Perl does not have a special boolean type, but the documentation often mentions that a function returns a "boolean" value. Sometimes it is simply written that the function returns true or false.
So where is the truth?
There is no special boolean type in Perl, but any scalar value when tested with if will return true or false. So you can write
If ($x eq "foo") ( )
If ($x) ( )
the first expression checks if the contents of the variable match $x with the string "foo" and the second will check if the value $x itself is true.
What values are considered true or false in Perl?
It's pretty simple. Let's look at the documentation:
The number 0, the strings "0" and "", the empty list "()" and "undef" are considered false in boolean context. All other values are considered true. Negating the true meaning with "!" or "not" returns a special false value. When used as a string it is considered "", and when used as a number it is considered 0.
From perlsyn, section "Truth and Falsehood".
Thus, the following scalar values are considered false:
- undef - undefined value
- 0 is the number 0, even if you write it as 000 or 0.0
- "" empty line.
- "0" is a string containing the single number 0.
All other scalar values are true, including these:
- 1 any number other than zero
- " " string with one or more spaces
- "00" two or more 0's in a line
- "0\n" 0 and line feed
- "true"
- "false" yes, even the string "false" is considered true.
I think this is because Larry Wall, the creator of Perl, has a generally positive view of the world. Apparently he believes that very few things in the world are truly bad and false, and most of them are true.
True-false [͵tru:ʹfɔ:ls] a log.
truthful; having truth values "true" and "false"
true-false questions - “yes-no” questions
New large English-Russian dictionary. 2001 .
See what "true-false" is in other dictionaries:
true-false- adjective offering a series of statements each of which is to be judged as true or false a true false test Ant: multiple choice * * * true false “TROO FLS”, adjective. having to do with or containing statements which must be marked as either… … Useful english dictionary
true-false- adjective Allowing only the answers true or false. Somehow he got one true false question wrong out of twenty … Wiktionary
true-false test- true′ false′ test n. edu a test requiring one to mark statements as either true or false Etymology: 1920–25 … From formal English to slang
true-false test- ☆ true false test n. a test, as one typically given in school, consisting of a series of statements to be identified as either “true” or “false” … English World dictionary
True/False Film Festival- Infobox Film Festival name = True/False Film Festival caption = opening = closing = awardsreceived = awardsgiven = films = directors = producers = writers = starring = host = Ragtag Programming for Film and Media Art date = number = 40 50… … Wikipedia
true-false test- (ˈ) ̷ ̷ˈ ̷ ̷ noun: an objective test consisting of a series of statements each of which is to be marked as either true or false * * * /trooh fawls /, Educ. a test requiring one to mark statements as true or false. * * * n. a test… …Useful english dictionary
true-false test- noun Date: 1924 a test consisting of a series of statements to be marked as true or false … New Collegiate Dictionary
true-false test- /trooh fowls/, Educ. a test requiring one to mark statements as true or false. * * * … Universalium
The True False Identity- Infobox Album | Name = The True False Identity Type = Album Artist = T Bone Burnett Released = 2006 Recorded = Genre = Rock Length = 59:30 Label = DMZ Producer = T Bone Burnett Reviews = * Allmusic Rating|3.5|5… … Wikipedia
False- is the antonym of the adjective true.False is the 2nd album of Gorefest, False (album).False may also refer to: * FALSE, an esoteric stack oriented programming language * false, a Unix utilityee also* Contradiction * Falsity * Lie * Falsework, a... ... Wikipedia
true-falsetest- true false test (tro͞oʹfôlsʹ) n. A test in which statements are to be marked either true or false. * * * … Universalium
Books
- The true-blue laws of Connecticut and New Haven and the false blue-laws invented by the Rev. Samuel Peters to which are added specimens of the laws and... blue-laws of England in the reign of James I, Trumbull J Hammond. The book is a reprint edition. Despite the fact that serious work has been done to restore the original quality of the publication, some pages may contain...
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