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SQL Case Sensitive String Compare
How do you compare strings so that the comparison is true only if the cases of each of the strings are equal as well. For example:
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Go to particular revision
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You can do this git log -n1. But unless git checkout failed, it's a waste of effort.
– Marcelo Cantos
Sep 24 '11 at 23:56
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Redirecting Output from within Batch file
...ght also want different messages on the screen. It is still possible to to do this efficiently by redirecting to undefined handles outside a parenthesized block or subroutine, and then use the & notation to reference the already opened files.
call :sub 9>File1.txt 8>File2.txt
exit /b
:su...
Rails has_and_belongs_to_many migration
...ils g migration CreateJoinTableRestaurantUser restaurants users
From the docs:
There is also a generator which will produce join tables if JoinTable
is part of the name:
Your migration file (note the :id => false; it's what prevents the creation of a primary key):
Rails 3
class Crea...
scala vs java, performance and memory? [closed]
...++] = map.get(s);
}
Whew! Hard work. In Scala, the most compact way to do the same thing is:
val bigEnough = array.filter(_.length > 2).flatMap(mapping.get)
Easy! But, unless you're fairly familiar with how the collections work, what you might not realize is that this way of doing this cr...
Detecting that the browser has no mouse and is touch-only
...when your noble user decides wants to unplug his mouse and go full touch.. do you wait for him to touch your now crammed interface, then change it right after he's made the effort to pinpoint your now crowded UI?
In bullet form, quoting stucox at https://github.com/Modernizr/Modernizr/issues/869#is...
How to convert byte array to string [duplicate]
I created a byte array with two strings. How do I convert a byte array to string?
4 Answers
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When is each sorting algorithm used? [closed]
...der elements with identical keys.
Recommendations:
Quick sort: When you don't need a stable sort and average case performance matters more than worst case performance. A quick sort is O(N log N) on average, O(N^2) in the worst case. A good implementation uses O(log N) auxiliary storage in the f...
How can I update a single row in a ListView?
...s loaded in a separate thread (with a queue and all) and when the image is downloaded, I now call notifyDataSetChanged() on the list adapter to update the image. This works, but getView() is getting called too frequently, since notifyDataSetChanged() calls getView() for all visible items. I ...
How to get a complete list of object's methods and attributes?
does not return pattern as one of the lists's elements. Namely it returns:
5 Answers
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