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How can you hide database output in Rails console?
In newer version of Rails, I'm guessing from 3 up, database queries are output to the console. This is useful most of the time, but how can you hide it when you do not want to see it?
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What is the difference between buffer and cache memory in Linux?
...110207101856/http://www.linuxforums.org/articles/using-top-more-efficiently_89.html
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How to write an async method with out parameter?
... answered Apr 27 '18 at 14:30
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Is there a C++ gdb GUI for Linux? [closed]
... local and remote processes.
If your not familiar with using an Eclipse based IDE, the GUI will take a little getting used to. However, once you get to understand the GUI ideas that are unique to Eclipse (e.g. a perspective), using the tool becomes a nice experience.
The CDT tooling provides a ...
How to change the decimal separator of DecimalFormat from comma to dot/point?
... or this answer will be of help.
String text = "1,234567";
NumberFormat nf_in = NumberFormat.getNumberInstance(Locale.GERMANY);
double val = nf_in.parse(text).doubleValue();
NumberFormat nf_out = NumberFormat.getNumberInstance(Locale.UK);
nf_out.setMaximumFractionDigits(3);
String output = nf_out....
Swift - How to convert String to Double
...ormatter()
formatter.locale = Locale.current // USA: Locale(identifier: "en_US")
formatter.numberStyle = .decimal
let number = formatter.number(from: "9,999.99")
Currency formats
let usLocale = Locale(identifier: "en_US")
let frenchLocale = Locale(identifier: "fr_FR")
let germanLocale = Locale(id...
Why no love for SQL? [closed]
... it seems that every framework under the sun comes pre-packaged with a database abstraction layer.
29 Answers
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How to debug an apache virtual host configuration?
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Syntax check
To check configuration files for syntax errors:
# Red Hat-based (Fedora, CentOS) and OSX
httpd -t
# Debian-based (Ubuntu)
apache2ctl -t
# MacOS
apachectl -t
List virtual hosts
To list all virtual hosts, and their locations:
# Red Hat-based (Fedora, CentOS) and OSX
httpd -S
# Deb...
The modulo operation on negative numbers in Python
...thon, modulo operator works like this.
>>> mod = n - math.floor(n/base) * base
so the result is (for your case):
mod = -5 - floor(-1.25) * 4
mod = -5 - (-2*4)
mod = 3
whereas other languages such as C, JAVA, JavaScript use truncation instead of floor.
>>> mod = n - int(n/base) * ...
Close and Dispose - which to call?
... them!
http://www.ondotnet.com/pub/a/oreilly/dotnet/news/programmingCsharp_0801.html?page=last
While there may be many instances (like on SqlConnection) where you call Disponse() on some object and it simply calls Close() on it's connection or closes a file handle, it's almost always your best bet...