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Cast Object to Generic Type for returning
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212
You have to use a Class instance because of the generic type erasure during compilation.
publi...
Does Ruby regular expression have a not match operator like “!~” in Perl?
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156
Yes: !~ works just fine – you probably thought it wouldn’t because it’s missing from the...
Replace specific characters within strings
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410
With a regular expression and the function gsub():
group <- c("12357e", "12575e", "197e18",...
Using “like” wildcard in prepared statement
... "SELECT * FROM analysis WHERE notes LIKE ? ESCAPE '!'");
pstmt.setString(1, notes + "%");
or a suffix-match:
pstmt.setString(1, "%" + notes);
or a global match:
pstmt.setString(1, "%" + notes + "%");
share
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Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
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143
Yes, it's subassignment in R using <- (or = or ->) that makes a copy of the whole object...
Get Unix Epoch Time in Swift
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162
You can simply use NSDate's timeIntervalSince1970 function.
let timeInterval = NSDate().time...
Join a list of strings in python and wrap each string in quotation marks
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178
>>> words = ['hello', 'world', 'you', 'look', 'nice']
>>> ', '.join('"{0}"'....
Is JSON Hijacking still an issue in modern browsers?
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1 Answer
1
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Why was the arguments.callee.caller property deprecated in JavaScript?
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// This snippet will work:
function factorial(n) {
return (!(n>1))? 1 : factorial(n-1)*n;
}
[1,2,3,4,5].map(factorial);
// But this snippet will not:
[1,2,3,4,5].map(function(n) {
return (!(n>1))? 1 : /* what goes here? */ (n-1)*n;
});
To get around this, arguments.calle...