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How can I create a two dimensional array in JavaScript?
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var items = [
[1, 2],
[3, 4],
[5, 6]
];
console.log(items[0][0]); // 1
console.log(items[0][1]); // 2
console.log(items[1][0]); // 3
console.log(items[1][1]); // 4
console.log(items);
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How can I multiply and divide using only bit shifting and adding?
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answered May 5 '10 at 22:31
Andrew ToulouseAndrew Toulouse
1,09311 gold badge99 silver badges1010 bronze badges
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os.path.dirname(__file__) returns empty
... Sven MarnachSven Marnach
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3
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Get underlying NSData from UIImage
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answered Jan 7 '11 at 9:13
CarolineCaroline
4,81022 gold badges2727 silver badges4545 bronze badges
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Value of type 'T' cannot be converted to
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293
Even though it's inside of an if block, the compiler doesn't know that T is string.
Therefore, i...
List of special characters for SQL LIKE clause
...ons => [0-9] Instead you need to specify each character like this : [0123456789]
– Çağdaş Tekin
Apr 3 '09 at 5:13
3
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Unnamed/anonymous namespaces vs. static functions
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339
The C++ Standard reads in section 7.3.1.1 Unnamed namespaces, paragraph 2:
The use of the...
Joining two lists together
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Sipo
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answered Oct 6 '09 at 21:24
ChrisF♦ChrisF
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Create a submodule repository from a folder and keep its git commit history
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3 Answers
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How to succinctly write a formula with many variables from a data frame?
... the . identifier.
y <- c(1,4,6)
d <- data.frame(y = y, x1 = c(4,-1,3), x2 = c(3,9,8), x3 = c(4,-4,-2))
mod <- lm(y ~ ., data = d)
You can also do things like this, to use all variables but one (in this case x3 is excluded):
mod <- lm(y ~ . - x3, data = d)
Technically, . means all ...