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How do I find the length of an array?
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Doing sizeof( myArray ) will get you the total number of bytes allocated for that array. You can then find out the number of elements in the array by dividing by the size of one element in the array: sizeof( myArray[0] )
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Cookies vs. sessions
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Nice explaination . I use GUID in token to recognise individual users.
– Karthik
Jan 20 '16 at 8:14
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Using Java 8 to convert a list of objects into a string obtained from the toString() method
...d guess that iterative string concatenation (reduction) requires array (re)allocation at each iteration, which makes it O(n^2). join on the other side would preallocate a single array large enough to store the final string before populating it, making it O(n).
– Eli Korvigo
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Importance of varchar length in MySQL table
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+1. I've also seem some JDBC drivers that allocate enough space for the maximum size when setting up buffers to retrieve rows. Needless to say, this causes much angst and gnashing of teeth when some clown has just done varchar(50000) just in case someone has a really...
How can I create a two dimensional array in JavaScript?
...st dimension values initialized to run .map. Remember that Array will not allocate the positions until you order it to through .fill or direct value assignment.
var arr = Array(2).fill(null).map(() => Array(4));
arr[0][0] = 'foo';
console.info(arr);
Follow up
Here's a method tha...
Identify duplicates in a List
...timal solution (instead of sorting the input) then you'll also want to pre-allocate the size of the HashSet() objects. Without the preallocation, you don't get O(1) insert time when inserting into the HashSet(). This is because the internal hash array gets repeatedly resized. The inserts then averag...
How can I change my Cygwin home folder after installation?
...eral other alternative schemes for the windows option plus several other % tokens you can use instead of %H or in addition to it. See the nsswitch.conf syntax description in the Cygwin User Guide for details.
If you installed Cygwin prior to 1.7.34 or have run its mkpasswd utility so that you have ...
Cell spacing in UICollectionView
... to zero.
UICollectionViewFlowLayout *flow = [[UICollectionViewFlowLayout alloc] init];
flow.itemSize = CGSizeMake(cellWidth, cellHeight);
flow.scrollDirection = UICollectionViewScrollDirectionHorizontal;
flow.minimumInteritemSpacing = 0;
flow.minimumLineSpacing = 0;
Also, if all your cells are t...
What are best practices for REST nested resources?
...u should use POST /teams and you could get userId after authorizing access token. I mean when you create a stuff you need authorization code, right? I don't know what framework are you using but I'm sure you could get userId in API controller. For example: In ASP.NET API, call RequestContext.Princip...
MySQL high CPU usage [closed]
...db_buffer_pool_size (if you're using innodb tables) as all of these memory allocations can have an affect on query performance which can cause MySQL to eat up CPU.
You'll also probably want to give the following a read over as they contain some good information.
How MySQL Uses Memory
MySQL System...