negation Questions
3
Solved
Is it possible to do string negation in regular expressions? I need to match all strings that do not contain the string "..". I know you can use ^[^\.]*$ to match all strings that do not contain "....
Ironstone asked 20/7, 2009 at 14:15
4
Solved
Given this input:
[
{
"Id": "cb94e7a42732b598ad18a8f27454a886c1aa8bbba6167646d8f064cd86191e2b",
"Names": [
"condescending_jones",
"loving_hoover&qu...
2
Can I use ~A to invert a numpy array of booleans, instead of the rather awkward functions np.logical_and() and np.invert()?
Indeed, ~ seems to work fine, but I can't find it in any nympy reference ...
Ghibelline asked 5/12, 2012 at 17:15
7
I was wondering if anyone was familiar with any attempts at algorithmic sentence negation.
For example, given a sentence like "This book is good" provide any number of alternative sentences meanin...
Zoroastrianism asked 13/4, 2010 at 21:27
3
Solved
In many Prolog guides the following code is used to illustrate "negation by failure" in Prolog.
not(Goal) :- call(Goal), !, fail.
not(Goal).
However, those same tutorials and texts warn...
Spinster asked 3/12, 2022 at 0:13
2
I've read quite a bit about Prolog's Negation by Failure where Prolog in order to prove that \+Goal holds tries to prove that Goal fails.
This is highly connected with CWA (close world assumption) ...
Limestone asked 9/12, 2017 at 14:21
2
Solved
I've got a query:
MyModel.query.filter(Mymodel.name.contains('a_string'))
I need to do the same query but with the negation (a not like operator) but didn't find any operator matching my need i...
Conjoint asked 16/2, 2011 at 15:57
3
Solved
I know that 0 and NULL evaluate to FALSE on their own and I know that a negative integer or a positive integer evaluate to TRUE on their own.
My understanding is that the NOT operation will happe...
Tor asked 16/6, 2016 at 23:52
2
Solved
Given the input json
[
{"title": "first line"},
{"title": "second line"},
{"title": "third line"}
]
How can we extract only the titles that contain keywords that are listed in a second "filte...
Fiery asked 11/2, 2019 at 10:54
1
So this is more an oddity I've come up against than something I really want to use. But I found something I didn't understand with the bash extended test syntax.
Check this out (included my shell ...
12
Solved
So this is more of a theoretical question. C++ and languages (in)directly based on it (Java, C#, PHP) have shortcut operators for assigning the result of most binary operators to the first operand,...
Perambulator asked 20/8, 2018 at 8:46
1
Solved
I wanted to create a simple NOT operator in typescript where you get all primitives combined into the union of some type A that are NOT primitive members of the union of a second type B. This can b...
Gallard asked 11/8, 2018 at 3:28
3
Solved
Given that x is a variable of type int with the number 5 as its value, consider the following statement:
int y = !!x;
This is what I think it happens: x is implicitly casted to a bool and the fi...
3
Solved
I have a vector of strings:
ve <- c("N","A","A","A","N","ANN","NA","NFNFNAA","23","N","A","NN", "parnot", "important", "notall")
I want to keep only three possible values in this vector: N, A...
1
Solved
I came across this piece of code from the Microsoft implementation of GSL (the C++ Guideline Support Library):
#if defined(__clang__) || defined(__GNUC__)
#define GSL_LIKELY(x) __builtin_exp...
9
Solved
In C/C++, why should one use abs() or fabs() to find the absolute value of a variable without using the following code?
int absoluteValue = value < 0 ? -value : value;
Does it have something ...
Samarium asked 4/2, 2018 at 14:17
4
Solved
Is there a short negation of %in% in R like !%in% or %!in%?
Of course I can negate c("A", "B") %in% c("B", "C") by !(c("A", "B") %in% c("B", "C")) (cf. this question) but I would prefere a...
2
Solved
Does MiniKanren have the "not" operator?
For example, how would one represent Prolog's
a :- b, not(c)
a is true if b is true and c is not (Prolog uses negation as failure, i.e. not(c) is consid...
Lucier asked 11/8, 2017 at 21:56
1
Solved
The Intel Software Development Manual says this about the neg instruction:
The CF flag set to 0 if the source operand is 0; otherwise it is set to 1. The OF, SF, ZF, AF, and PF flags are set acc...
Indocile asked 30/6, 2017 at 1:20
2
Solved
What is the best way to perform, inside a regex, negation of multiple words and permutations of chars that make up those words?
For instance: I do not want
"zero dollar"
"roze dollar...
Miletus asked 1/3, 2017 at 17:46
1
Solved
I have not managed to find out how to negate booleans in TCL...
I tried:
set x true
puts !$x #prints '!true'
puts ![$x] #prints !
puts [!$x] #prints no event matches "true"
puts !{$x} #prints !{tr...
1
Solved
I use http://www.w3.org/TR/css3-mediaqueries/ to have different design depending on the available viewport.
In order for my search-and-replace to work, for every time I decide to adjust the ...
Rabies asked 12/4, 2016 at 21:54
1
Hi and thanks for looking!
I'm searching for articles which contain certain strings with full text search, something like this:
SELECT * FROM Articles_fts WHERE body MATCH 'monkey OR banana OR "h...
Pheni asked 26/2, 2015 at 13:36
6
~ & ^ | + << >> are the only operations I can use
Before I continue, this is a homework question, I've been stuck on this for a really long time.
My original approach: I thought t...
Readjustment asked 21/1, 2011 at 23:34
2
Solved
What's the most idiomatic way of writing a filter with a negation?
Example:
is_even= lambda x : x % 2 == 0
odd_numbers= filter( lambda x: not is_even(x), range(10) )
Of course, you can just use...
Catiline asked 9/1, 2015 at 18:30
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