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Why does MYSQL higher LIMIT offset slow the query down?
...caused by counting the entries in the index tree, as oposed to finding the starting index (for which SQL index tree is optimized and it gets pointed close to the target row, without going through particular rows). The next part, reading number of rows, is equaly "slow" when using WHERE ID > x. Bu...
Why doesn't Java support unsigned ints?
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As soon as signed and unsigned ints are mixed in an expression things start to get messy and you probably will lose information. Restricting Java to signed ints only really clears things up. I’m glad I don’t have to worry about the whole signed/unsigned business, though I sometimes do miss ...
Putting license in each code file? [closed]
... is only a small section of the full license. safest to attach them to the start of each source file - safest but not required. each file should have at least the "copyright" line and a pointer to where the full notice is found. - only requirement is the copyright line with a pointer to the rest. I...
Max size of an iOS application
...chase but its annoying. It will put the icon on you SpringBoard, appear to start downloading then give you a size warning.
– Maciej Swic
Nov 28 '11 at 15:50
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How do I change the highlight style in Vim spellcheck?
...hat will), they just interpret particular escape sequence sent by vim as «start underlined region» and another sequence as «end underlined region» (or even «clear all styles»). What is actually shown is determined in code of the terminals, but I guess most of them just pass style information t...
Trust Store vs Key Store - creating with keytool
..., that's my first assumption, so if that's not correct, I probably haven't started very well...
7 Answers
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The Ruby %r{ } expression
...xps more readable. Example from GitHub's Ruby style guide:
regexp = %r{
start # some text
\s # white space char
(group) # first group
(?:alt1|alt2) # some alternation
end
}x
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LINQ query to select top five
...egins with:
Returns a specified number of contiguous elements from the start of a
sequence.
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jQuery: Performing synchronous AJAX requests
...ng removed (link). Many browsers including Firefox and Chrome have already started to print a warning in the console if you use this:
Chrome:
Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https:/...
How to convert a column number (e.g. 127) into an Excel column (e.g. AA)
...and apply (int) cast. Considering that in most cases in C# world you would start numbering from 0, here is my revision: <!-- language: c# --> public static string GetColumnName(int index) // zero-based { const byte BASE = 'Z' - 'A' + 1; string name = String.Empty; do { name ...