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PHP: Count a stdClass object
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The problem is that count is intended to count the indexes in an array, not the properties on an object, (unless it's a custom object that implements the Countable interface). Try casting the object, like below, as an array and seeing if that helps.
$total = count((array)$ob...
Multiple submit buttons on HTML form – designate one button as default [duplicate]
... The primary problem with this solution is that it breaks tab index. Repositioning of buttons with CSS does not change their tabindex order. So pressing tab will not consistently go from top / bottom, left to right. See stackoverflow.com/a/31911751/442472 for a solution that addresses t...
Border around specific rows in a table?
..., you can select any rows/cells you want (as long as you know the relative indexes of things in the table). For example, you can select all rows except the top two and bottom one with tr:not(:nth-child(-n+2)):not(:nth-last-child(1))
– B T
Jul 11 '14 at 19:05
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How to make Eclipse behave well in the Windows 7 taskbar?
...nvironment, working folder (at startup at least), and the icon path + icon index. So you have to:
Do a file copy of the .lnk file and fill in the missing gaps yourself
Or, use a shortcut creation tool that understands System.AppUserModel.ID properties (there are plenty)
Or, use the Windows API dir...
How can I add a key/value pair to a JavaScript object?
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This is not an array but an object. JS arrays are indexed only by integer. Try to do arr.length and it'll return 0. More reading about this: less-broken.com/blog/2010/12/…
– DevAntoine
Jul 18 '12 at 12:27
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Optimal way to concatenate/aggregate strings
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Don't forget to put an index on that id column once the size of a table becomes a problem.
– milivojeviCH
Dec 9 '12 at 15:15
2
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Hidden features of Scala
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Case classes automatically mixin the Product trait, providing untyped, indexed access to the fields without any reflection:
case class Person(name: String, age: Int)
val p = Person("Aaron", 28)
val name = p.productElement(0) // name = "Aaron": Any
val age = p.productElement(1) // age = 28: Any...
Measure elapsed time in Swift
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let start = NSDate()
for index in 1...10000 {
// do nothing
}
let elapsed = start.timeIntervalSinceNow
// elapsed is a negative value.
share
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Why doesn't Java support unsigned ints?
...t be negative, then it also needs subranges (a la Pascal) because an array index can't be greater than the array size.
– Wayne Conrad
Jan 27 '10 at 5:05
84
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How to delete a row by reference in data.table?
.... 'keep.idxs'
keep.idxs <- setdiff(DT[, .I], del.idxs); # select row indexes to keep
cols = names(DT);
DT.subset <- data.table(DT[[1]][keep.idxs]); # this is the subsetted table
setnames(DT.subset, cols[1]);
for (col in cols[2:length(cols)]) {
DT.subset[, (col) := DT[[col]][keep...