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Questions tagged [zero]

Zero is a unique number and along with 1 is one of the two binary numbers. Zero plays an important role in Mathematics and Computing. This Tag is for discussions of zero within various programming languages.

Zero is a unique number and along with 1 is one of the two binary numbers. Zero plays an important role in Mathematics and Computing. This Tag is for discussions of zero within various programming languages.

1060 questions
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Make division by zero equal to zero

How can I ignore ZeroDivisionError and make n / 0 == 0?
octosquidopus
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negative zero in python

I encountered negative zero in output from python; it's created for example as follows: k = 0.0 print(-k) The output will be -0.0. However, when I compare the -k to 0.0 for equality, it yields True. Is there any difference between 0.0 and -0.0 (I…
max
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Pad python floats

I want to pad some percentage values so that there are always 3 units before the decimal place. With ints I could use '%03d' - is there an equivalent for floats? '%.3f' works for after the decimal place but '%03f' does nothing.
hoju
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Equals operator for zeros (BigDecimal / Double) in Java

A few interesting observations w.r.t equals operator on 0 and 0.0 new Double(0.0).equals(0) returns false, while new Double(0.0).equals(0.0) returns true. BigDecimal.ZERO.equals(BigDecimal.valueOf(0.0)) returns false, while…
Manish Mulani
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Changing a SUM returned NULL to zero

I have a stored procedure as follows: CREATE PROC [dbo].[Incidents] (@SiteName varchar(200)) AS SELECT ( SELECT SUM(i.Logged) FROM tbl_Sites s INNER JOIN tbl_Incidents i ON s.Location = i.Location WHERE s.Sites =…
Icementhols
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13 answers

How to remove rows with any zero value

I have a problem to solve how to remove rows with a Zero value in R. In others hand, I can use na.omit() to delete all the NA values or use complete.cases() to delete rows that contains NA values. Is there anyone know how to remove rows with a Zero…
YougyZ
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How to fill a matrix with zero (0)

I need to fill matrix distances with 0. How can I do this? distances <- matrix(1:25, nrow=5, ncol=5) apply(distances, c(1, 2), function(x) 0)
Klausos Klausos
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How set 0 with MAX function when it is NULL?

I would like to understand how to set 0 value of the attribute when it is NULL with MAX function. For example: Name columns: number - date Values: 10 - 2012-04-04 11 - 2012-04-04 12 - 2012-04-04 13 - 2012-04-15 14 - 2012-06-21 1 -…
Donovant
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zerofill a integer php

How would I go about 'zero filling' an integer? ie 1 becomes 0001 40 becomes 0040 174 becomes 0174
dotty
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34
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Oracle, adding leading zeros to string (not number)

I am using Oracle (work space is TOAD) and I need to make my strings that if they are shorted then 10 characters then add leading zeros to make them all 10 digit strings. For example if I have a string like this: '12H89' need to be '0000012H89' or…
Ovi
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Removing Trailing Zeros in Python

I need to find a way to convert the following strings in python: 0.000 => 0 0 => 0 123.45000 => 123.45 0000 => 0 123.4506780 => 123.450678 and so forth. I tried .rstrip('0').rstrip('.'), but that doesn't work if the input…
Raiders
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How to replace nulls with zeros in postgresql crosstabs

I've a product table with product_id and 100+ attributes. The product_id is text whereas the attribute columns are integer, i.e. 1 if the attribute exists. When the Postgresql crosstab is run, non-matching atrributes return null values. How do I…
Mike
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'0' as a string with empty() in PHP

I want a 0 to be considered as an integer and a '0' to be considered as a string, but empty() considers the '0' as a string in the example below, $var = '0'; // Evaluates to true because $var is empty if (empty($var)) { echo '$var is…
Run
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Size of zero pixels in CSS with or without 'px' suffix?

Googling for the answer to this question has proven difficult so I figured somebody here should know. Within CSS, I've seen zero pixels declared as simply '0' yet also as '0px'. mystyle { width: 0; } anotherstyle { width: 0px; } The minor problem…
Sparky
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PHP remove first zeros

Want to remove all 0 placed at the beginning of some variable. Some options: if $var = 0002, we should strip first 000 ($var = 2) if var = 0203410 we should remove first 0 ($var = 203410) if var = 20000 - do nothing ($var = 20000) What is the…
James
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