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A beginner's guide to SQL database design [closed]
...tware/database-design-tutorial/intro.html
It's pretty concise compared to reading an entire book and it explains the basics of database design (normalization, types of relationships) very well.
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Nested Git repositories?
...stead of having the context of a helper shell script; I found it easier to read.
– John K
May 16 '11 at 5:21
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Reading InputStream as UTF-8
I'm trying to read from a text/plain file over the internet, line-by-line. The code I have right now is:
3 Answers
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When to choose checked and unchecked exceptions
...tside their control has caused the operation to fail. For example, you try reading a file but someone deletes it between the time you check if it exists and the time the read operation begins. By declaring a checked exception, you are telling the caller to anticipate this failure.
Reasonable to reco...
Pass ruby script file to rails console
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You can use
bundle exec rails runner "eval(File.read 'your_script.rb')"
UPDATE:
What we also have been using a lot lately is to load the rails environment from within the script itself. Consider doit.rb:
#!/usr/bin/env ruby
require "/path/to/rails_app/config/environme...
Which parts of Real World Haskell are now obsolete or considered bad practice?
...version 6.8 of GHC was being used. 6.8 used base version 3.0.x.x. 6.10.1 already used 4.0.0.0, which introduced many changes. And that's just the jump from 6.8 to 6.10. The current version of GHC is 7.10. Monads have been changed. There's currently a discussion to remove return from Monad, so the Mo...
How to make grep only match if the entire line matches?
...at case:
grep '^[[:blank:]]*ABB\.log[[:blank:]]*$' a.tmp
A simple while-read loop in shell would do this implicitly:
while read file
do
case $file in
(ABB.log) printf "%s\n" "$file"
esac
done < a.tmp
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How to extract one column of a csv file
...Newer versions of csvtool seem to require using - as the input filename to read from stdin.
– Connor Clark
Oct 9 '19 at 1:10
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Initializing C# auto-properties [duplicate]
... Foo
{
public string Bar { get; set; } = "bar";
}
You can also write read-only automatically-implemented properties, which are only writable in the constructor (but can also be given a default initial value:
public class Foo
{
public string Bar { get; }
public Foo(string bar)
{
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Reading an image file into bitmap from sdcard, why am I getting a NullPointerException?
How can I read an image file into bitmap from sdcard?
4 Answers
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