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Styling an input type=“file” button
...n't seem to bring up the "Choose file" dialg- in fact nothing happens. Any ideas?
– andig
Mar 10 '13 at 11:02
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Group by with multiple columns using lambda
...l list I'm grouping, and its a List<ResultCsvImport>. Note that the idea here to is that, I'm grouping by 3 columns, IdObj1 and IdObj2 and IdObj3
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Count(*) vs Count(1) - SQL Server
...ion" (could be a base table, `VIEW, derived table, CTE, etc).
I guess the idea was that COUNT(*) is easy to parse. Using any other expression requires the parser to ensure it doesn't reference any columns (COUNT('a') where a is a literal and COUNT(a) where a is a column can yield different results)...
When NOT to use yield (return) [duplicate]
...essary, get me into trouble, or otherwise should be avoided?
It's a good idea to think carefully about your use of "yield return" when dealing with recursively defined structures. For example, I often see this:
public static IEnumerable<T> PreorderTraversal<T>(Tree<T> root)
{
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__FILE__ macro shows full path
...folder the file is in, and only relative to the root of your project.
The idea is to get the size of the source directory with your build tool and just add it to the __FILE__ macro, removing the directory entirely and only showing the file name starting at your source directory.
The following exam...
Concatenate two string literals
I am reading Accelerated C++ by Koenig. He writes that "the new idea is that we can use + to concatenate a string and a string literal - or, for that matter, two strings (but not two string literals).
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How to exclude this / current / dot folder from find “type d”
...y machine's man find have it escaped so it seems like it's probably a Good Idea™. Edit — Just noticed it even explicitly says: ! expr True if expr is false. This character will also usually need protection from interpretation by the shell.
– Adrian Günter
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How is attr_accessible used in Rails 4?
...filter parameters in controller layer, and i don't think that this is best idea for all applications. For me the best way to filter parameters is to use additional layer. And we can use 'protected_attributes' gem to write this layer
– edikgat
Oct 16 '14 at 11:2...
How to use MySQL DECIMAL?
... the answers above seems correct, just a simple explanation to give you an idea of how it works.
Suppose that your column is set to be DECIMAL(13,4). This means that the column will have a total size of 13 digits where 4 of these will be used for precision representation.
So, in summary, for that ...
How to deny access to a file in .htaccess
... I get a 500 internal server error when using this code. Any idea why? I'm using Wordpress.
– Keryn Gill
Jan 26 '15 at 21:25
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