How to choose between two items based on a percentage in Objective-C? [closed] - objective-c

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I am trying to figure out how to choose between two things based on a percentage, but I don't know how to code it correctly. I am trying to choose between item a and item b when the chance of item a being chosen is 33.33% and item b is 66.67%. I'm not sure if I should use if else statements or something else. I would like to know how to code it in objective c, but any advice would be helpful.
Thanks

If the percentages are fixed, it's quite easy:
int result = (arc4random_uniform(3) == 0) ? a : b;
Essentially, this says "if a uniformly distributed non-negative integer strictly less than 3 is exactly equal to 0 (which happens 1/3 of the time), then the value of this expression is a, else it is b".

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Creating a measure from two columns present in two different fields [closed]

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I am new to Power BI. I know how to create a measure between two columns present within a field. But how do I create a measure from two different columns present in two different fields (IVIGUsage and TargetvsActuals?
I need to create a measure for gram variance and grams to target. So, could you please help me out? Earlier I had created the measure based on the one field targetvsactual which are as:
%GM_Target = Calculate(
DIVIDE(
Sum('TargetVsActuals'[Total_Grams]),
SUM('TargetVsActuals'[Target_Grams])))
Gram Variance = (Sum('TargetVsActuals'[Target_Grams]) - Sum('TargetVsActuals'[Total_Grams]))
So, this has to be modified. Please help me out.

Why put 2 in (test_sums == 2).mean() [closed]

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simulate 1 million tests of three fair coin flips
tests = np.random.randint(2, size=(int(1e6), 3))
sums of all tests
test_sums = tests.sum(axis=1)
proportion of tests that produced exactly one head
(test_sums == 2).mean()
if heads is represented by 0 then any test containing only one heads will contain one 0 and two 1, thus their sum will be exactly 2
more descriptive way of writing the code would be to check every occurrences of head
heads = tests == 0
then sum the occurrences per test
heads_per_test = heads.sum(axis= 1)
and see where total occurrences are exactly 1
(heads_per_test == 1).mean()

How to find amount exclusive of tax from an amount inclusive of tax? [closed]

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How to find amount exclusive of tax from an amount inclusive of tax?
Currently I'm using this query and getting the desired result.
I am searching for a simple query.
My current query:
select #amountExclusiveOfTax=
(#amountInclusiveOfTax) -
((#amountInclusiveOfTax) - (((#amountInclusiveOfTax)/#taxPercent+100) * 100))
Is there any easier way?
This was taught in day one of my business math class:
SELECT #amountExclusiveOfTax = #amountInclusiveOfTax / (1 + #taxPercetange / 100)
This assume your #taxPercentage is stored in percentage form. For example, if the tax is 15%, then #taxPercentage = 15. Another popular form is the decimal form, where it's stored as 0.15.

Create a for loop that counts up to one variable by another in lua [closed]

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This is an assignment I must complete in CSP and I'm completely dumbfounded as to how to do it:
"Get two numbers from the user. The first will be the number to count up to, the second will be the number to count by.
For example, the user gives the numbers "20" and "3"
1
4
7
10
13
16
19
Note: it didn't actually reach 20."
Seems pretty standard
for i = start, finish, increment do
print(i)
end
Is a for loop, so just substitute finish and increment with the numbers and set start to 1

SQL Image field divided by 2 [closed]

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Could anyone help me on the below please?
I have a field called F1.Images and I need to divide by 2 ONLY when my other field W1.Plex is Duplex else I need to retain the F1.Images count.
Thanks Satya
Sorted Brad.
Used Case/When logic. Here's the Answer:
Case
WHEN W1.Plex = 'Duplex' then (F1.images / 2)
Else F1.images
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