The if–then construct (sometimes called if–then–else) is common across many programming languages. Although the syntax varies quite a bit from language to language, the basic structure (in pseudocode form) looks like this: If (boolean condition) Then (consequent) Else (alternative) End If
Questions tagged [if-case]
11 questions
3
votes
1 answer
if-case pattern matching - Variable binding in a condition requires an initializer
I'm working through Big Nerd Ranch's Swift Programming book (2nd edition), and in the chapter on the Switch statement, there's a small section on in-cases and how to use them. When describing how to implement if-cases with multiple conditions, this…
enharmonics
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1 answer
complementery of an if case
How would you write this:
if case .SomeEnum(3) = enumType where myInt == 3 {
//I don't need this case
} else {
//This is the case I need
}
I know I could use guard:
guard case .SomeEnum(3) = enumType where myInt == 3 else {
//This is the…
Daniel
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1 answer
Is it possible to use 'if-case' in place of a switch that has a coma delimited list as a case?
Swift 2 introduced if-case which is supposed to be a more terse way of expressing a switch that only has a few cases. I'm wondering if there is a way of expressing a switch statement with a comma delimited list as an if-case.
let (a,b) =…
Dan Beaulieu
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vote
2 answers
Using mutate, if_else, and rowSums to create a new var based on condition
I have a data frame which is in long format. I have multiple cities. Each of the cities has information for each month and information also for each code (this code goes from 100 up to 1,000). My dataframe looks like…
Adriana Castillo Castillo
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vote
0 answers
Alternative for If conditions and replacing it with inheritance
So my problem is that you have a lot of if conditions to be checked and inside that if condition you have multiple lines of code. I want to eliminate it and use inheritance instead. For every if statement I will be using a separate class to handle…
Akila Randil
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0
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2 answers
Is there a nested for loop aproach to inside parameters in a fcase() in R?
My code is like this:
fcase(V2009 == 9L & V3006 == 2L, V1032,
V2009 == 10L & V3006 == 3L, V1032,
V2009 == 11L & V3006 == 4L, V1032,
V2009 == 12L & V3006 == 5L, V1032,
V2009 == 13L & V3006 == 6L, V1032,
…
0
votes
4 answers
Improving SQL query for covid-project
I was wondering if any of you could help me to improve this query
SELECT IF(cases.country_region LIKE '%Korea%', 'South Korea', IF(upper(cases.country_region) = 'IRAN (ISLAMIC REPUBLIC OF)', 'Iran',
IF(upper(cases.country_region) =…
0
votes
0 answers
Expected ',' joining parts of a multi- clause condition in a Swift "If Case"
let age = 25
if case 18...35 = age where age >= 21 {
print ("In Cool Demographic and of drinking age")
}
In Swift, when I type the code above, it says right before in "where", there's a little red line under the "w" and it…
Toby Klauder
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0
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2 answers
Bash scripting - if cases $? > 0
Sorry for possible spam, I'm finishing RHEL Security Hardening/Auditing script, where I want an overall result in the end.
For example,
# PermitEmptyPasswords
grep -E '^\s*PermitEmptyPasswords\s+no\s*' /etc/ssh/sshd_config &> /dev/null
if [ $? = 0…
kd.maxi
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0
votes
1 answer
select case, according to find text
I want to update a sheet with new data about every 15 minutes. the code I'm looking for is something like:
case data is not exist in the sheet "do something" case else "do somthing else"
The code i wrote is:
Dim LastRow1 As Long
With…
Mahyar Mohammadi
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- 4
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votes
1 answer
compare Value of cookie returns "false" every time
I got a function named getCookie(x) which returns the value of the cookie with name x.
When i check with console.log(getCookie(foo)); it returns the correct term of either solved or an empty string if the cookies doesnt exist. Foo is a variable!
For…
Martin WasGehtSieDasAn
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