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Questions tagged [negate]

84 questions
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negating levels for fct_collapse

I have a smaller list of levels that should not be collapsed ("Alberta", "British Columbia", "Ontario", "Quebec") than the ones that should (all else). I haven't been able to negate the levels (code as example of the goal) for fct_collapse (all but…
ibm
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Shell alias input search syntax for a negated find search

Mac OSX Bash Shell I want to use find to identify anything (directories or files) which do not follow an input pattern. This works fine: find . -path /Users/Me/Library -prune -o \! \( -path '*.jpg' \) However I want to have a general ability to…
Richard L
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TextPad regular expression negation with a min/max

In TextPad I am trying to find any line that does not start with a 6 or 7 digit number. So it should find all lines that do not look like: "123456" or "1234567" I wrote this expression: ^[^(\d{6,7})] It is not finding lines that start with only 2…
Sam Brown
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PHP - nagate callback result

Is there any way to negate result of callback? $this->myInjectedService->doSomething([$this, 'myCallback']); I need to nagate result of myCallback method. I know I can do it by nested function, but is there any more clean way (exclamation…
MakoBuk
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How to replace values in df that are NOT fulfilling condition

I am trying to clean my data and can't find a way to replace values that are not according to my conditions like in the following example: df1<- data.frame( A=c("a","b","c"), Ch=c("c1","xyz","c2"), val=paste0("x",1:3), stringsAsFactors =…
antonina
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Assembly negation in msp430

I have the following versions of negating some integer value (in R12) in assembly in msp430 : inv R12 inc R12 this is according to the manual and I think this will work the same? inv R12 add #1, R12 But will this work and why not? : sub #1,…
user8756425
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Scheme altering tree values

I receive a tree and suppose to output the same tree with the values negated: 1 becomes -1, -2 becomes 2, #t becomes #f and the opposite way. The tree is flexible - each can have multiple sons, one or none. I'm not allowed to add user-defined helper…
Adam Morad
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How to use negate function with balanced ternary numbers?

I've been trying to convert balanced ternary numbers through the negate function in python def convert_to_balanced_ternary(n): if n == 0: return '0' negative = n < 0 bt = '' while n > 0: r = n % 3 if r == 0: bt = '0' + bt …
Mr Mister
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Regex to remove all except XML

I need help with a Regex for notepad++ to match all but XML The regex I'm using: (!?\<.*\>) <-- I want the opposite of this (in first three lines) The example code: [20173003] This text is what I want to delete…
ScaZ
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bitwise negate and bitwise XOR 1 not equivalent?

My discrete math tells me that negate every bit of a binary number is equivalent to XOR it with 1. That is: ~1010 === 0101 1010 XOR 111 = 0101 But this doesn't hold in javascript: ~123 === -124 123 ^ 1 === 122 Why?
Boyang
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Automating process to multiply values in tab delimited file by -1 to negate them

I've been manually processing a large amount of files in Excel. I've done some searching but haven't found a definitive best practice as to how I can achieve this process in an automated fashion. My manual process is as follows: I have a .tab…
UnladenSwallow
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Is there a difference between -x vs x * -1.0f?

In java, is there a difference between negating a variable vs multiplying a variable by a float minus one, if the variable is also a float?
Marek Krzeminski
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Turn on leftmost bit of a Short

Original question changed. I want to bitwise turn off the left most bit of a Short value (&H8000) and leave the other bits as they are. Dim x = BitConverter.GetBytes(Short.MaxValue Or &H8000) Dim z = BitConverter.ToInt16(x, 0) Isn't there any…
Shimmy Weitzhandler
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Python text search library

I am looking for a library that would let me do something like the following: matches( user_input="hello world how are you what are you doing", keywords='+world -tigers "how are" -"bye bye"' ) Basically I want it to match strings based on…
ipartola
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Regex and jquery validate. Negate expression

I'm working on a addition method for the jquery validate plugin which must detect if 3 or more consecutive identical characters are entered, and prompt a message. To do so I need to negate a regex expression. This is my…
Adorablepolak
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