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How to determine the first and last iteration in a foreach loop?
...more simplified version of the above and presuming you're not using custom indexes...
$len = count($array);
foreach ($array as $index => $item) {
if ($index == 0) {
// first
} else if ($index == $len - 1) {
// last
}
}
Version 2 - Because I have come to loathe using...
MySQL vs MongoDB 1000 reads
... lately. I had a table called posts in MySQL with about 20 million records indexed only on a field called 'id'.
7 Answers
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Undo part of unstaged changes in git
...ts you choose individual hunks from the diff between your working copy and index to revert. Likewise, git add -p allows you to choose hunks to add to the index, and git reset -p allows you to choose individual hunks from the diff between the index and HEAD to back out of the index.
$ git checkout -...
Git SVN error: a Git process crashed in the repository earlier
...
The file in question is likely .git/index.lock and it should be safe to just remove it if you have no other git processes running. Make sure a git-svn command isn't hanging.
PS My usual approach to fixing git-svn problems is to make a fresh pull of the repos...
Vim: Delete buffer without losing the split window
...avior has bugged me a lot! btw, latest version of bufkill is at github.com/qpkorr/vim-bufkill
– fsrechia
Jan 12 '17 at 12:06
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Sort Dictionary by keys
...rate over both the keys and the values in a key sorted order, this form is quite succinct
let d = [
"A" : [1, 2],
"Z" : [3, 4],
"D" : [5, 6]
]
Swift 1,2:
for (k,v) in Array(d).sorted({$0.0 < $1.0}) {
println("\(k):\(v)")
}
Swift 3+:
for (k,v) in Array(d).sorted(by: {$0.0 < $1...
Two-dimensional array in Swift
...ccessing the elements in a multidimensional array, the left-most subscript index refers to the element at that index in the outermost array. The next subscript index to the right refers to the element at that index in the array that’s nested one level in. And so on. This means that in the example ...
What is the use of the square brackets [] in sql statements?
I've noticed that Visual Studio 2008 is placing square brackets around column names in sql. Do the brackets offer any advantage? When I hand code T-SQL I've never bothered with them.
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Number of occurrences of a character in a string [duplicate]
...u could do this:
int count = test.Split('&').Length - 1;
Or with LINQ:
test.Count(x => x == '&');
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Are Javascript arrays sparse?
That is, if I use the current time as an index into the array:
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