I have a use-case where I have a start and end value from Json and would like to be able to define a closed range between them. Coming from Swift, I would use the Closed Integer Range. This way, I can perform contains() functions on them as well as find the start and end values. I was wondering if there was an equivalent of this built into Dart? If not, what is the most efficient way of creating this? I would assume something with sets? Thank you in advance
Related
I have this number :
b = 1.324567890123456789
and the question was ask how was it stored in lua? Now when I type print(b), it shows that the end digits are
...1235
Now the question gave me the options of
...12345
or
...12346
or the option of none on the list -- and i was just wondering if anyone could help me solve this?
By default, Lua stores real numbers as double precision floating point values.
print calls tostring, which converts doubles to strings using "%.14g". [1]
Use string.format("%.17g",b) if you want more decimals.
[1] https://www.lua.org/source/5.3/luaconf.h.html#LUA_NUMBER_FMT
This question already has answers here:
Is there a constant for max/min int/double value in dart?
(5 answers)
Closed 2 years ago.
The question is in the title: is there a constant INT_MAX (the maximum value of an integer) in the Dart language?
I don't care what it is, I just want to use it as an initialization constant to, for example, find a minimum value in a List.
I note that there is a double.maxFinite which I could use as in
int i = double.maxFinite.toInt();
but that somehow seems wrong to me. Or is it?
There is no maximal integer value across Dart platforms.
On native platforms, the maximal value is 0x7FFFFFFFFFFFFFFF (263-1). There is no constant provided for it.
On web platforms, the maximal integer value is double.maxFinite.
If I had to do something which needed an initial maximal value (finding the minimal element of a list, perhaps), I'd prefer to start out with the first element, and throw on an empty input.
As a second choice, I'd use num for the accumulator and use double.infinity as starting value. Then I'd check at the end and do something useful if the value is still infinite.
I'm a student using Xcode 6 and what I need to know is how the user can type input and then I can use that input in a formula. For instance:
The user inputs 5 in one field, 7 in another and 9 and a third and then I use these three numbers in a math formula to return a value. The formula could be something like: 9/7/5 = 0.25
I'm new to programming with Swift, and I have been searching the web for an answer and I somehow can't find what I'm looking for although it's a relatively simple concept. Code examples are definitely preferred and greatly appreciated.
It is quite simple. All you need to do is get the input values using the text property of UITextField like textField1.text
For more info refer to https://developer.apple.com/library/ios/documentation/UIKit/Reference/UITextField_Class/index.html#//apple_ref/occ/instp/UITextField
I have a field in my data with low, middle and high. I want to replace low with 1, middle with 2 and high with 3.
Is there a good way to do this?
(I'm very Beginner for SPSS software.)
Else you could simply write this as Syntax:
string new_variable (a1).
RECODE
old_variable
("low"="1") ("middle"="2") ("high"="3") INTO new_variable.
EXECUTE.
Got a link which solve my problem and sharing for others, who came accross for same problem.
http://www.unige.ch/ses/sococ/cl/spss/tasks/createdummies.html
Depending on what you're measuring you could consider to type the field as a ordinal value type. It is not technically an interval value.
if oldString="low" newNum=1.
if oldString="middle" newNum=2.
if oldString="high" newNum=3.
I'm asking this question in a different way, another user let me know what I need to ask for, I'm basically looking to convert to "decimal degrees". The conversion of course must be accurate. I see javascript solutions out there like this javascript example. I need ruby. Maybe someone could write the javascript in Ruby and I can try that, if that's easy of course and if it's right that is?
Basically I have this in my DB.
<coordinates_east>6'01.4</coordinates_east>
<coordinates_north>45'05.5</coordinates_north>
I need a routine written in Ruby to convert these to decimal degrees for use with the google maps API, possible?
you want like this? not understand your question well though.
puts "6'01.4".scan(/(\d+)'(\d+)\.(\d+)/).map{|x,y,z|x.to_f+y.to_f/60+z.to_f/3600}
6.01777777777778
puts "36'57.9".scan(/(\d+)'(\d+)\.(\d+)/).map{|x,y,z|x.to_f+y.to_f/60+z.to_f/3600}
36.9525