In dynamically typed language, truthiness is a term used to describe a value that might evaluate to boolean true.
Questions tagged [truthiness]
99 questions
0
votes
2 answers
Get truth value of column value in sqlite query
If I have a column in a table of zero and nonzero numbers, how do I get the {0,1} truth value of it?
Data
x, y
0, 111
1, 0
2, 444
(sql query, something like select x, TRUTHOF(y) from Data)
Result
x, y_truth
0, 1
1, 0
2, 1
Using sqlite3 in python.
ehacinom
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votes
1 answer
Conditional value (like while loop) as method parameter
So, I'm attempting to have a method that effectively does this:
- (void)doWhile: (/*some magical type*/)condition
{
while (condition)
{
// do some magical things
}
}
And while your first suggestion might be a BOOL consider the…
Patrick Perini
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votes
1 answer
Why doesn't typescript object made up of false values return false? Otherwise how can I make it?
I have the following object:
const obj = {valueOne: false, valueTwo: false, valueThree: false}
and
console.log(obj)
console.log(Boolean(obj))
// true
// true
One would think console.log(Boolean(obj) would return false but it doesn't? Is there any…
rowen
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- 6
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votes
2 answers
Dictionary Truth Value Testing
>>> dict = {}
>>> a=2
>>> if a is not None and dict is None:
... print("lol")
... else:
... print(" Print result is a")
...
result is a
Why does the first if statement does not run? I am specifying that thedictis empty and that" a"`…
Yazzz
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- 6
-1
votes
2 answers
Difference between an if statement and an if equals statement
Is there an actual difference between
if statement:
and
if statement == True:
Aside from the first one being shorter, does one have a higher precedence, or is one slower?
EDIT:
I realized this may not have been clear, but statement is usually…
MasterHolbytla
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votes
2 answers
Ruby Method Arguments - Can they change truth value automatically?
I have this method
def forest(sword, armour, ring)
with its arguments having true or false values, which I declare in the main program as
forest false, false, false
If during the program sword=true && armour=true, is there any way for Ruby to…
Sophie Proud
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votes
2 answers
Mysterious Cases of Booleans, Equivalencies, and Object Identifiers
First Mystery of Strings:
How come bool('foo') returns True?
if
'foo' == True returns False
'foo' == False returns False
'foo' is True returns False
'foo' is False returns False
Second Mystery of Integers:
How come bool(5) returns True?
if
5…
Clever Programmer
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votes
2 answers
Is there a string in Perl that is equal to all other strings under eq?
I am running a string equality check like this:
if($myString eq "ExampleString")
Is there a value that myString could have which would cause execution to enter the if structure no matter what the string literal is?
zztops
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votes
1 answer
Truthiness test not performing as expected
I have a simple function that tests an item in a tuple to see if it is truthy or not. For some reason all tests come back True (...if connection:...), even though the value being tested is either a 1 (assumed True) or 0 (assumed false).
I tested to…
theeviininja
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