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What does ";" mean in this equation?
y = f(x;θ)
or
equation
f(X;A) means the function f is function of variables X , with regarding of the parameters A.
As an example, F(X;A)= a*x^x+b*x+c where X=[x] is variable, and A=[a,b,c] are the parameters.
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So I found out that any variable or constant in swift is a tuple. For example, variable x below is a tuple
var x = 15
and following statement is valid and evaluates to value of x as the first element of tuple
x.0.0.0.0.0.0.0.0.0.0.0 // outputs 15
I'm wondering why the language has been built to accommodate this. Any known (or outworldly) use case?
I don't know can it be the right answer, but it gives some information and shows that it's a known thing. Look this 2 sections:
Special: The 1-Tuple
Bonus Track: Tuples All the Way Down
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I googled, but the only examples i found with frac was with numbers or simple variables, no one near with alpha, beta or pi.
Can somebody please help me with this equation? Or provide an example using frac with alpha, beta and pi?
Here is my equation that gives me error.
\textit{$\gamma_{i}$(t)$\equiv$ P($X_{t}$ = i $\vert$ Y,$\theta$)} = \frac{$\alpha_{i}$ (t) $\beta_{i}$ (t)} {$\sum\limits_{j=1}^{N}$ $\alpha_{j}$ (t) $\beta_{j}$(t)}
Thanks in advance.
You don't need the italics, or the many sets of dollar signs. Try something more like this:
$\gamma_{i}(t)\equiv P(X_{t} = i \vert Y,\theta) = \frac{\alpha_{i} (t) \beta_{i} (t)} {\sum\limits_{j=1}^{N} \alpha_{j} (t) \beta_{j}(t)}$
Gives (tested with this online LaTeX editor):
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How to write something
if !inBoundary then do
printfn "no it's not within the boundary"
You can use the not built-in function (and omit the do keyword after then):
let inBoundary = false
if not inBoundary then
printfn "no it's not within the boundary"
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Questions asking for code must demonstrate a minimal understanding of the problem being solved. Include attempted solutions, why they didn't work, and the expected results. See also: Stack Overflow question checklist
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Given I have:
int1, int2, int3 = 1, nil, 3
how would I subtract these ints from another variable, only if they weren't nil? I can write something sloppy, but I want a single line process if possible.
another_variable - [int1, int2, int3].compact.sum
othervariable - int1.to_i # will turn nil into 0
You can write something like
ans = int1 && (int2-int1)
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first of all i'm new in latex
I wanted to ask if there is a way where i can enlose a text like a code like here in stack overflow thank you very much.
Ive searched here but i dont really know what to seek or how to ask something like this.
I don't know what do you mean by code like text. But you can use \verbatim to display some code like the following if this is what you wanted:
\begin{verbatim}
for i in range(1, 20):
print i
else:
print "the loop is done"
\end{verbatim}