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NPM clean modules
...very strange that such a basic functionality, that is actually recommended by npm, requires a hack to achieve. What does everyone else do? Just ignore the recommendation and use npm install?
– VitalyB
Apr 20 '14 at 8:47
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C# getting its own class name
...dvantages: 1. Static context. 2. The type portion will not be re-evaluated by the CLR each time - it will be written to the MSIL. 3. It protects you from someone declaring a new "GetType()".
– Gilbert
Apr 16 '14 at 19:48
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how to reset
... an empty string. So in "pure" JavaScript it would be:
document.getElementById("uploadCaptureInputFile").value = "";
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MySQL: selecting rows where a column is null
...ull_values.asp:
1) NULL values represent missing unknown data.
2) By default, a table column can hold NULL values.
3) NULL values are treated differently from other values
4) It is not possible to compare NULL and 0; they are not equivalent.
5) It is not possible to test for ...
Convert a matrix to a 1 dimensional array
...on the matrix. You might want to transpose the matrix first if you want it by rows or columns.
> m=matrix(1:12,3,4)
> m
[,1] [,2] [,3] [,4]
[1,] 1 4 7 10
[2,] 2 5 8 11
[3,] 3 6 9 12
> as.vector(m)
[1] 1 2 3 4 5 6 7 8 9 10 11 12
> as.vecto...
Center HTML Input Text Field Placeholder
...-placeholder-css.
But I don't believe that text-align will be interpreted by the browsers. At least on Chrome, this attribute is ignored. But you can always change other things, like color, font-size, font-family etc. I suggest you rethinking your design whether possible to remove this center behav...
Convert stdClass object to array in PHP
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While converting a STD class object to array.Cast the object to array by using array function of php.
Try out with following code snippet.
/*** cast the object ***/
foreach($stdArray as $key => $value)
{
$stdArray[$key] = (array) $value;
}
/*** show the results ***/
print_r( ...
How to sort a list of strings numerically?
... to the key parameter to the .sort method. With this, the system will sort by key(x) instead of x.
list1.sort(key=int)
BTW, to convert the list to integers permanently, use the map function
list1 = list(map(int, list1)) # you don't need to call list() in Python 2.x
or list comprehension
l...
Convert string to symbol-able in ruby
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from: http://ruby-doc.org/core/classes/String.html#M000809
str.intern => symbol
str.to_sym => symbol
Returns the Symbol corresponding to str, creating the symbol if it did not previously exist. See Symbol#id2name.
"Koala".intern ...
How to update attributes without validation
...seem to be deprecated in Rails 4.2 (it is aliased as update_column): api.rubyonrails.org/classes/ActiveRecord/…
– Tonči D.
Mar 18 '15 at 11:27
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