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Append text to input field
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kgiannakakiskgiannakakis
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What is the best java image processing library/approach? [closed]
...le to use - a single class consists of a set of simple graphics operations all defined as static methods that you pass an image and get back a result.
The most basic example of using the library would look like this:
BufferedImage thumbnail = Scalr.resize(image, 150);
And a more typical usage to...
Delete with Join in MySQL
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Actually you can use an alias for joined tables, but not for the main table (posts). "DELETE posts FROM posts INNER JOIN projects p ON p.project_id = posts.project_id"
– Weboide
May 29 '12 a...
SQL: How to properly check if a record exists
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I would prefer not use Count function at all:
IF [NOT] EXISTS ( SELECT 1 FROM MyTable WHERE ... )
<do smth>
For example if you want to check if user exists before inserting it into the database the query can look like this:
IF NOT EXISTS ( SELECT 1 ...
How to structure a express.js application?
... it.
Of those, I think Twitter's matador is structured pretty well. We actually used a very similar approach to how they load up parts of the app.
derby.js also looks extremely interesting. It's akin to meteor without all of the hype and actually gives credit where credit is due (notably, node and e...
Is R's apply family more than syntactic sugar?
...tem elapsed
7.52 0.00 7.58
Edit 2:
Regarding the usage of parallel packages for R (e.g. rpvm, rmpi, snow), these do generally provide apply family functions (even the foreach package is essentially equivalent, despite the name). Here's a simple example of the sapply function in snow:
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how to permit an array with strong parameters
...ermit expects each argument to be a Hash or a Symbol. Ruby magic will turn all key value pairs s at the end of a method call into one hash, but Ruby won't know what to do if you mix symbols with key/value pairs in your method call.
– sameers
Nov 20 '13 at 0:05
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Number of processors/cores in command line
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Make sure to nproc --all for all installed Processing Units. Without --all, nproc only shows Processing Units available to the current process. Read the man page for more details. MMV.
– JamesThomasMoon1979
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How to create a trie in Python
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Unwind is essentially correct that there are many different ways to implement a trie; and for a large, scalable trie, nested dictionaries might become cumbersome -- or at least space inefficient. But since you're just getting started, I think...
How do I export UIImage array as a movie?
...riter has an input of type AVAssetWriterInput, which in turn has a method called appendSampleBuffer: that lets you add individual frames to a video stream. Essentially you’ll have to:
1) Wire the writer:
NSError *error = nil;
AVAssetWriter *videoWriter = [[AVAssetWriter alloc] initWithURL:
[...