I'm relatively new to Z3 and experimenting with it in python. I've coded a program which returns the order in which different actions is performed, represented with a number. Z3 returns an integer representing the second the action starts.
Now I want to look at the model and see if there is an instance of time where nothing happens. To do this I made a list with only 0's and I want to change the index at the times where each action is being executed, to 1. For instance, if an action start at the 5th second and takes 8 seconds to be executed, the index 5 to 12 would be set to 1. Doing this with all the actions and then look for 0's in the list would hopefully give me the instances where nothing happens.
The problem is: I would like to write something like this for coding the problem
list_for_check = [0]*total_time
m = s.model()
for action in actions:
for index in range(m.evaluate(action.number) , m.evaluate(action.number) + action.time_it_takes):
list_for_check[index] = 1
But I get the error:
'IntNumRef' object cannot be interpreted as an integer
I've understood that Z3 isn't returning normal ints or bools in their models, but writing
if m.evaluate(action.boolean):
works, so I'm assuming the if is overwritten in a way, but this doesn't seem to be the case with range. So my question is: Is there a way to use range with Z3 ints? Or is there another way to do this?
The problem might also be that action.time_it_takes is an integer and adding a Z3int with a "normal" int doesn't work. (Done in the second part of the range).
I've also tried using int(m.evaluate(action.number)), but it doesn't work.
Thanks in advance :)
When you call evaluate it returns an IntNumRef, which is an internal z3 representation of an integer number inside z3. You need to call as_long() method of it to convert it to a Python number. Here's an example:
from z3 import *
s = Solver()
a = Int('a')
s.add(a > 4);
s.add(a < 7);
if s.check() == sat:
m = s.model()
print("a is %s" % m.evaluate(a))
print("Iterating from a to a+5:")
av = m.evaluate(a).as_long()
for index in range(av, av + 5):
print(index)
When I run this, I get:
a is 5
Iterating from a to a+5:
5
6
7
8
9
which is exactly what you're trying to achieve.
The method as_long() is defined here. Note that there are similar conversion functions from bit-vectors and rationals as well. You can search the z3py api using the interface at: https://z3prover.github.io/api/html/namespacez3py.html
I'm trying to create a random number generator in Lua. I found out that I can just use math.random(1,100) to randomize a number between 1 and 100 and that should be sufficient.
But I don't really understand how to use the randomize number as variables in the script.
Tried this but of course it didn't work.
$randomCorr = math.random(1,100);
http.request_batch({
{"POST", "https://store.thestore.com/priceAndOrder/selectProduct", headers={["Content-Type"]="application/json;charset=UTF-8"}, data="{\"ChoosenPhoneModelId\":4,\"PricePlanId\":\"phone\",\"CorrelationId\":\"$randomCorr\",\"DeliveryTime\":\"1 vecka\",\"$$hashKey\":\"006\"},\"ChoosenAmortization\":{\"AmortizationLength\":0,\"ChoosenDataPackage\":{\"Description\":\"6 GB\",\"PricePerMountInKr\":245,\"DataAmountInGb\":6,\"$$hashKey\":\"00W\"},\"ChoosenPriceplan\":{\"IsPostpaid\":true,\"Title\":\"Fastpris\",\"Description\":\"Fasta kostnader till fast pris\",\"MonthlyAmount\":0,\"AvailiableDataPackages\":null,\"SubscriptionBinding\":0,\"$$hashKey\":\"00K\"}}", auto_decompress=true},
{"GET", "https://store.thestore.com/api/checkout/getproduct?correlationId=$randomCorr", auto_decompress=true},
})
In Lua, you can not start a variable name with $. This is where your main issue is at. Once the $ is removed from your code, we can easily see how to refer to variables in Lua.
randomCorr = math.random(100)
print("The random number:", randomCorr)
randomCorr = math.random(100)
print("New Random Number:", randomCorr)
Also, concatenation does not work the way you are implying it into your Http array. You have to concatenate the value in using .. in Lua
Take a look at the following example:
ran = math.random(100)
data = "{\""..ran.."\"}"
print(data)
--{"14"}
The same logic can be implied into your code:
data="{\"ChoosenPhoneModelId\":4,\"PricePlanId\":\"phone\",\"CorrelationId\":\""..randomCorr.."\",\"DeliveryTime\":\"1 vecka\",\"$$hashKey\":\"006\"},\"ChoosenAmortization\":{\"AmortizationLength\":0,\"ChoosenDataPackage\":{\"Description\":\"6 GB\",\"PricePerMountInKr\":245,\"DataAmountInGb\":6,\"$$hashKey\":\"00W\"},\"ChoosenPriceplan\":{\"IsPostpaid\":true,\"Title\":\"Fastpris\",\"Description\":\"Fasta kostnader till fast pris\",\"MonthlyAmount\":0,\"AvailiableDataPackages\":null,\"SubscriptionBinding\":0,\"$$hashKey\":\"00K\"}}"
Or you can format the value in using one of the methods provided by the string library
Take a look at the following example:
ran = math.random(100)
data = "{%q}"
print(string.format(data,ran))
--{"59"}
The %q specifier will take whatever you put as input, and safely surround it with quotations
The same logic can be applied to your Http Data.
Here is a corrected version of the code snippet:
local randomCorr = math.random(1,100)
http.request_batch({
{"POST", "https://store.thestore.com/priceAndOrder/selectProduct", headers={["Content-Type"]="application/json;charset=UTF-8"}, data="{\"ChoosenPhoneModelId\":4,\"PricePlanId\":\"phone\",\"CorrelationId\":\"" .. randomCorr .. "\",\"DeliveryTime\":\"1 vecka\",\"$$hashKey\":\"006\"},\"ChoosenAmortization\":{\"AmortizationLength\":0,\"ChoosenDataPackage\":{\"Description\":\"6 GB\",\"PricePerMountInKr\":245,\"DataAmountInGb\":6,\"$$hashKey\":\"00W\"},\"ChoosenPriceplan\":{\"IsPostpaid\":true,\"Title\":\"Fastpris\",\"Description\":\"Fasta kostnader till fast pris\",\"MonthlyAmount\":0,\"AvailiableDataPackages\":null,\"SubscriptionBinding\":0,\"$$hashKey\":\"00K\"}}", auto_decompress=true},
{"GET", "https://store.thestore.com/api/checkout/getproduct?correlationId=" .. randomCorr, auto_decompress=true},
})
There is something called $$hashKey also, in the quoted string. Not sure if that is supposed to be referencing a variable or not. If it is, it also needs to be concatenated into the resulting string, using the .. operator (just like with the randomCorr variable).
Afternoon,
Im playing around with a little bidding script im trying to write. But im having trouble with formatNumber function.
currentBid = 50.51 'from database dataType double(16,2)
yourBid = isNumeric(Request("bid"))
If FormatNumber(yourBid,2) > FormatNumber(currentBid,2) Then
Response.Write"bid successful... woop woop"
else
Response.Write"you cant bid below the current asking price"
end if
But if i was to bid 1000 is writes "you cant bid below the current asking price"
Please advise
Regards
Shane
'Changed as advised
currentBid = 50.51 'value from database
If IsNumeric(Request.Form("bid")) Then
yourBid = CDbl(Request.Form("bid"))
end if
You have two issues here:
As Ekkehard mentioned, IsNumeric() returns a boolean. To test if the value is numeric and then store to your variable, use:
If IsNumeric(Request("bid")) Then yourBid = CDbl(Request("bid"))
FormatNumber() returns a string representation of a number. So you're comparing one string against another instead of one number against another. If you need to round your numbers to two decimals, use the Round() function instead:
If Round(yourBid,2) > Round(currentBid,2) Then
Edit: Proof.
MsgBox VarType(4) ' 2 = vbInteger
MsgBox VarType(FormatNumber(4)) ' 8 = vbString
The line
yourBid = isNumeric(Request("bid"))
does not store a valid number into yourBid, but the (booelan) result of the IsNumeric() function applied to Request("bid").
Change the line to
yourBid = CDbl(Request("bid"))
and see if your IF statement works as expected. Then add a proper validation for Request("bid").
I'm trying to display total calls from a twilio object as well as unique calls.
The total calls is simple enough:
# set up a client to talk to the Twilio REST API
#sub_account_client = Twilio::REST::Client.new(#account_sid, #auth_token)
#subaccount = #sub_account_client.account
#calls = #subaccount.calls
#total_calls = #calls.list.count
However, I'm really struggling to figure out how to display unique calls (people sometimes call back form the same number and I only want to count calls from the same number once). I'm thinking this is a pretty simple method or two but I've burnt quite a few hours trying to figure it out (still a ruby noob).
Currently I've been working it in the console as follows:
#sub_account_client = Twilio::REST::Client.new(#account_sid, #auth_token)
#subaccount = #sub_account_client.account
#subaccount.calls.list({})each do |call|
#"from" returns the phone number that called
print call.from
end
This returns the following strings:
+13304833615+13304833615+13304833615+13304833615+13304567890+13304833615+13304833615+13304833615
There are only two unique numbers there so I'd like to be able to return '2' for this.
Calling class on that output shows strings. I've used "insert" to add a space then have done a split(" ") to turn them into arrays but the output is the following:
[+13304833615][+13304833615][+13304833615][+13304833615][+13304567890][+13304833615][+13304833615][+13304833615]
I can't call 'uniq' on that and I've tried to 'flatten' as well.
Please enlighten me! Thanks!
If what you have is a string that you want to manipulate the below works:
%{+13304833615+13304833615+13304833615+13304833615+13304567890+13304833615+13304833615+13304833615}.split("+").uniq.reject { |x| x.empty? }.count
=> 2
However this is more ideal:
#subaccount.calls.list({}).map(&:from).uniq.count
Can you build an array directly instead of converting it into a string first? Try something like this perhaps?
#calllist = []
#subaccount.calls.list({})each do |call|
#"from" returns the phone number that called
#calllist.push call.from
end
you should then be able to call uniq on #calllist to shorten it to the unique members.
Edit: What type of object is #subaccount.calls.list anyway?
uniq should work for creating a unique list of strings. I think you may be getting confused by other non-related things. You don't want .split, that's for turning a single string into an array of word strings (default splits by spaces). Which has turned each single number string, into an array containing only that number. You may also have been confused by performing your each call in the irb console, which will return the full array iterated on, even if your inner loop did the right thing. Try the following:
unique_numbers = #subaccount.calls.list({}).map {|call| call.from }.uniq
puts unique_numbers.inspect
I am trying to make a variable that I can increment each time after I use it.
The $companyLevel os the variable that I need to increment.
count = 20
# Variables (20)
while count > 0
$levelName = ""; 8.times{$levelName << (65 + rand(25)).chr}
$companyLevel = "CLev5"
browser2.button(:id, "addCompanyLevel").click
sleep 2
browser2.text_field(:id, $companyLevel).set $levelName
$companyLevel += 1
count -= 1
end
How do I create a variable that will have a number at the end that will increment each time it is used?
Thanks.
Since you already have a count, why does this need to be a variable? why not just do simple string concatenation to create the value you want on the fly
companyLevel = "CLev" + count.to_s
Unless you need to perhaps read up on what an 'array' is?
I'd suggest you purchase and read the book "Everyday Scripting with Ruby" it's a great way to lean the basics of the ruby language and geared towards testers.
This is achieved by creating an object with a property that increments not by creating a variable that increments.