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Easiest way to read from and write to files
...rite the string Str to a file
/// </summary>
/// <param name="Str"></param>
/// <param name="Filename"></param>
public static void WriteToFile(this string Str, string Filename)
{
File.WriteAllText(Filename, Str);
...
Is there any Rails function to check if a partial exists?
...=> "#{dynamic_partial}" if File.exists?(Rails.root.join("app", "views", params[:controller], "_#{dynamic_partial}.html.erb")) %>
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How to get the index of an item in a list in a single step?
...t;see cref="IEnumerable{T}"/>.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="list">The list.</param>
/// <param name="predicate">The predicate.</param>
/// <returns>
/// The zero-based index of the firs...
What is the proper way to check for null values?
...t session, if the type is correct and present
/// </summary>
/// <param name="key">The session key</param>
/// <param name="defaultValue">The default value</param>
/// <returns>Returns a strongly typed session object, or default value</returns>
public static...
Converting a generic list to a CSV string
...
No need to specify generic type parameters in call to ConvertAll here - both int and string will be inferred.
– Pavel Minaev
Dec 11 '09 at 19:01
...
Add new field to every document in a MongoDB collection
...llection, you have to use empty selector, and set multi flag to true (last param) to update all the documents
db.your_collection.update(
{},
{ $set: {"new_field": 1} },
false,
true
)
EDIT:
In the above example last 2 fields false, true specifies the upsert and multi flags.
Upsert: If...
Rails: update_attribute vs update_attributes
...d3 => "value3"
or if you get all fields data & name in a hash say params[:user] here use just
Object.update_attributes(params[:user])
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How do I get a PHP class constructor to call its parent's parent's constructor?
...
The ugly workaround would be to pass a boolean param to Papa indicating that you do not wish to parse the code contained in it's constructor. i.e:
// main class that everything inherits
class Grandpa
{
public function __construct()
{
}
}
class Papa exten...
What is the difference between range and xrange functions in Python 2.X?
...
xrange only stores the range params and generates the numbers on demand. However the C implementation of Python currently restricts its args to C longs:
xrange(2**32-1, 2**32+1) # When long is 32 bits, OverflowError: Python int too large to convert to ...
Recommended way of getting data from the server
...ctionName': {
url:'/user/someURI'
method:'GET',
params: {
param1: '....',
param2: '....',
}
},
....
});
And return callbacks can be handled in ctrl scope like this.
// ctrl scope
serviceName.customActionName ({
paramName:'par...