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MySQL - Using COUNT(*) in the WHERE clause
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There can't be aggregate functions (Ex. COUNT, MAX, etc.) in A WHERE clause. Hence we use the HAVING clause instead. Therefore the whole query would be similar to this:
SELECT column_name, aggregate_function(column_name)
FROM table_name
WHERE column_name operator value
GROUP ...
What is the best Battleship AI?
... about the world (e.g. ships can't overlap, all hit squares must be ships, etc.) you can count how often ships occur at each unexplored position to estimate the likelihood that a ship is sitting there.
This can be visualized as a heat map, where hot spots are more likely to contain ships:
a heat...
How to install 2 Anacondas (Python 2 and 3) on Mac OS
...ach ipython notebook sets up another port (localhost:8888, localhost:8889, etc.). So just keep them straight and you're all set.
– alexis
May 1 '15 at 15:52
5
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When do you use Git rebase instead of Git merge?
...eating here -- remember that all these terms (merge, rebase, fast-forward, etc.) are referring to specific manipulations of a directed acyclic graph. They become easier to reason about with that mental model in mind.
– Roy Tinker
Jan 27 '17 at 19:24
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Javascript roundoff number to nearest 0.5
...and for that i can only assign font size in pts to 1, 1.5 or 2 and onwards etc.
7 Answers
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Make EditText ReadOnly
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If you setEnabled(false) then your editText would look disabled (gray, etc). You may not want to change the visual aspect of your editor.
A less intrusive way would be to use setFocusable(false).
I believe that this answers your question closer to your initial intent.
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Get UIScrollView to scroll to the top
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UPDATE FOR iOS 7
[self.scrollView setContentOffset:
CGPointMake(0, -self.scrollView.contentInset.top) animated:YES];
ORIGINAL
[self.scrollView setContentOffset:CGPointZero animated:YES];
or if you want to preserve the horizontal scroll position and ju...
How to comment lines in rails html.erb files? [duplicate]
...in any mixed language Rails View file, e.g, *.html.erb, *.js.erb, *.rhtml, etc.
This should also work with STD OUT/printing code, e.g. <%#= f.label :title %>
DETAILS:
Rather than use rails brackets on each line and commenting in front of each starting bracket as we usually do like this:
&l...
Regular expression for a hexadecimal number?
..., depends on the flavor you need to use (php, javascript, python , golang, etc.).
This answer was taken from:http://ult-tex.net/info/perl/
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Java inner class and static nested class
...class A can contain class B which contains class C which contains class D, etc. However, more than one level of class nesting is rare, as it is generally bad design.
There are three reasons you might create a nested class:
organization: sometimes it seems most sensible to sort a class into the na...