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MySQL: Large VARCHAR vs. TEXT?
...ords messages between users. Apart from the typical ids and message types (all integer types) I need to save the actual message text as either VARCHAR or TEXT. I'm setting a front-end limit of 3000 characters which means the messages would never be inserted into the db as longer than this.
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F# changes to OCaml [closed]
... is derived from OCaml, but what major items are missing or added? Specifically I'm curious as to whether the resources available for learning OCaml are also useful to someone who wants to learn F#.
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Why are C character literals ints instead of chars?
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discussion on same subject
"More specifically the integral promotions. In K&R C it was virtually (?)
impossible to use a character value without it being promoted to int first,
so making character constant int in the first place eliminated that step.
There...
Use of Finalize/Dispose method in C#
...able pattern is here. When programming a class that uses IDisposable, generally you should use two patterns:
When implementing a sealed class that doesn't use unmanaged resources, you simply implement a Dispose method as with normal interface implementations:
public sealed class A : IDisposable
{
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Bash: Strip trailing linebreak from output
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If your expected output is a single line, you can simply remove all newline characters from the output. It would not be uncommon to pipe to the 'tr' utility, or to Perl if preferred:
wc -l < log.txt | tr -d '\n'
wc -l < log.txt | perl -pe 'chomp'
You can also use command substit...
Why does “split” on an empty string return a non-empty array?
...ngleton array containing just the input string is returned,
Second, remove all the rightmost empty strings. This is the reason ",,,".split(",") returns empty array.
According to this, the result of "".split(",") should be an empty array because of the second step, right?
It should. Unfortunately,...
Change multiple files
...ot even just a builtin. For sed -i 's/old/new' *, the expansion of * must ALL be passed as an arglist to sed, and I'm fairly sure this has to happen before the sed process can even be started. Using the for loop, the full arglist (the expansion of *) never gets passed as a command, only stored in ...
ASP.NET MVC How to convert ModelState errors to json
How do you get a list of all ModelState error messages? I found this code to get all the keys:
( Returning a list of keys with ModelState errors )
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How to use the “required” attribute with a “radio” input field
...tribute for at least one input of the radio group.
Setting required for all inputs is more clear, but not necessary (unless dynamically generating radio-buttons).
To group radio buttons they must all have the same name value. This allows only one to be selected at a time and applies required to ...
What is the difference between async.waterfall and async.series
... https://github.com/caolan/async provides 2 similar methods, async.waterfall and async.series .
4 Answers
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