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How to use ? : if statements with Razor and inline code blocks
...pectively generate the source  . Now there is a function Html.Raw(" ") which is supposed to let you write source code, except in this constellation it throws a compiler error:
Compiler Error Message: CS0173: Type of conditional expression cannot
be determined because ther...
How do I get a raw, compiled SQL query from a SQLAlchemy expression?
I have a SQLAlchemy query object and want to get the text of the compiled SQL statement, with all its parameters bound (e.g. no %s or other variables waiting to be bound by the statement compiler or MySQLdb dialect engine, etc).
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Split string based on regex
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This will split at every space that is followed by a string of upper-case letters which end in a word-boundary.
Note that the square brackets are only for readability and could as well be omitted.
If it is enough that the first letter of a word is upper case (so if you would want to split in fron...
Regex, every non-alphanumeric character except white space or colon
...-zA-Z\d\s:]
\d - numeric class
\s - whitespace
a-zA-Z - matches all the letters
^ - negates them all - so you get - non numeric chars, non spaces and non colons
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What does inverse_of do? What SQL does it generate?
...gnment against non existing or invalid entries with validates_presence of :user_id, :role_id, it is useful. You can still generate a User @user with his association @user.role(params[:role_id]) so that saving the user would not result in a failing validation of the Assignment model.
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How does this print “hello world”?
...is posible to represent 2⁵ = 32 characters. English alphabet contains 26 letters, this leaves room for 32 - 26 = 6 symbols
apart from letters. With this codification scheme you can have all 26 (one case) english letters and 6 symbols (being space among them).
Algorithm description
The >>=...
Regex how to match an optional character
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Use
[A-Z]?
to make the letter optional. {1} is redundant. (Of course you could also write [A-Z]{0,1} which would mean the same, but that's what the ? is there for.)
You could improve your regex to
^([0-9]{5})+\s+([A-Z]?)\s+([A-Z])([0-9]{3})([0-9]...
Why are variables “i” and “j” used for counters?
... it's that way, I imagine SLaks is correct and it's because I is the first letter in Index.
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answered Nov 9 '10 at 19:54
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Virtual Serial Port for Linux
...pen a terminal (let's call it Terminal 0) and execute it:
socat -d -d pty,raw,echo=0 pty,raw,echo=0
The code above returns:
2013/11/01 13:47:27 socat[2506] N PTY is /dev/pts/2
2013/11/01 13:47:27 socat[2506] N PTY is /dev/pts/3
2013/11/01 13:47:27 socat[2506] N starting data transfer loop with F...
Capitalize only first character of string and leave others alone? (Rails)
...talise every word.
This line feels hefty, but will guarantee that the only letter changed is the first one.
new_string = string.slice(0,1).capitalize + string.slice(1..-1)
Update:
irb(main):001:0> string = "i'm from New York..."
=> "i'm from New York..."
irb(main):002:0> new_string = st...