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An error occurred while installing pg (0.17.1), and Bundler cannot continue
...alled under mac OSX Mavericks, having the postgres app (Version 9.2.2.0 ) from www.postgresapp.com installed. The underlying problem was simpy that the since postgres was installed via the app, the configuration file resides on a location which is not the default one when installing it without post...
Adding up BigDecimals using Streams
...same, except that I have added a totalMapper variable, that has a function from Invoice to BigDecimal and returns the total price of that invoice.
Then I obtain a Stream<Invoice>, map it to a Stream<BigDecimal> and then reduce it to a BigDecimal.
Now, from an OOP design point I would a...
What is tail call optimization?
...ion because the calling function will simply return the value that it gets from the called function. The most common use is tail-recursion, where a recursive function written to take advantage of tail-call optimization can use constant stack space.
Scheme is one of the few programming languages tha...
Function pointers, Closures, and Lambda
...implementations are almost identical.
This observation led to a wisecrack from Henry Baker:
People in the Algol/Fortran world complained for years that they didn't understand what possible use function closures would have in efficient programming of the future. Then the `object oriented program...
Bytecode features not available in the Java language
...re currently (Java 6) things you can do in Java bytecode that you can't do from within the Java language?
9 Answers
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static allocation in java - heap, stack and permanent generation
...on schemes in java, and there have been many doubts as I have been reading from various sources. I have collected my concepts, and I would request to go through all of the points and comment on them. I came to know that memory allocation is JVM specific, so I must say beforehand, that my question is...
How to write an async method with out parameter?
...
Far from being too complex, this could produce too many problem. Jon Skeet explained it very well here stackoverflow.com/questions/20868103/…
– MuiBienCarlota
Apr 21 '15 at 13:21
...
nginx missing sites-available directory
...4.03. These directories are not created automatically if you install nginx from the rpm files(whether nginx 1.6.2 or nginx 1.7.5) but many nginx configuration examples refer these...making you wonder whether your nginx got installed correctly or not.
– so_mv
Se...
What is the overhead of creating a new HttpClient per call in a WebAPI client?
...t with a new HttpClient requires re-establishing a new TCP/IP connection.
From my tests, using plain HTTP on a LAN, the performance hit is fairly negligible. I suspect this is because there is an underlying TCP keepalive that is holding the connection open even when HttpClientHandler tries to clos...
Eclipse Android and gitignore
... by Eclipse
proguard/
# Intellij project files
*.iml
*.ipr
*.iws
.idea/
From Gitignore on github
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