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Why does typeof array with objects return “object” and not “array”? [duplicate]
...perty names. A property name P (in the form of a String value) is an array index if and only if ToString(ToUint32(P)) is equal to P and ToUint32(P) is not equal to 2^32-1. A property whose property name is an array index is also called an element. Every Array object has a length property whose value...
How do I remove objects from a JavaScript associative array?
...sOwnProperty('lastName') // false
Note that when delete is applied to an index property of an Array, you will create a sparsely populated array (ie. an array with a missing index).
When working with instances of Array, if you do not want to create a sparsely populated array - and you usually don'...
When is it better to use an NSSet over an NSArray?
...arison
Unordered
Does not allow duplicates
NSArray
Can access items by index
Ordered
Allows duplicates
That's all there really is to it! Let me know if that helps.
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Attach parameter to button.addTarget action in Swift
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Hi, If i want to get indexPath or cell of button in tableView, is it possible?
– NKurapati
Jun 4 '15 at 10:10
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How to check whether dynamically attached event listener exists or not?
...) {
/* Iterate over every entry in the storage object. */
for (var index = 0, length = CustomEventStorage.length; index < length; index++) {
/* Cache the record. */
var record = CustomEventStorage[index];
/* Check whether the given element exists. */
if (e...
add a string prefix to each value in a string column using Pandas
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thank you. if of interest, dataframe indexes also support such string manipulations.
– tagoma
Jul 10 '17 at 21:30
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What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?
...sed you got so many upvotes for being wrong. A database is very good about indexes, doing the query for a specific CarID would return very fast. But if you got all the Wheels are once, you would have to search for CarID in your application, which is not indexed, this is slower. Unless you have major...
How to stop tracking and ignore changes to a file in Git?
...cting changes in these files you should also use this command:
git update-index --assume-unchanged [path]
What you probably want to do: (from below @Ryan Taylor answer)
This is to tell git you want your own independent version of the file or folder. For instance, you don't want to overwrit...
Undo git reset --hard with uncommitted files in the staging area
...
You should be able to recover any files back that you added to the index (e.g, as in your situation, with git add .) although it might be a bit of work. In order to add a file to the index, git adds it to the object database, which means it can be recovered so long as garbage collection has...
How to split last commit into two in Git
...
You should use the index. After doing a mixed reset ("git reset HEAD^"), add
the first set of changes into the index, then commit them. Then commit the
rest.
You can use "git add" to put all changes made in a file to the index. If you
don't wa...