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How do I log errors and warnings into a file?

... Use the following code: ini_set("log_errors", 1); ini_set("error_log", "/tmp/php-error.log"); error_log( "Hello, errors!" ); Then watch the file: tail -f /tmp/php-error.log Or update php.ini as described in this blog entry from 2008. ...
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Why do loggers recommend using a logger per class?

...ing: Log per class using System.Reflection; private static readonly ILog _logger = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); public void SomeMethod() { _logger.DebugFormat("File not found: {0}", _filename); } One logger per app (or similar) Logger.DebugFor...
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PHP method chaining?

...turned object. <?php class fakeString { private $str; function __construct() { $this->str = ""; } function addA() { $this->str .= "a"; return $this; } function addB() { $this->str .= "b"; return $this; } ...
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Using ChildActionOnly in MVC

...ntroller directly, but only from within another controller/action. Likely: _Partial views. – Langeleppel Sep 26 '13 at 12:19 ...
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What's the difference between IEquatable and just overriding Object.Equals()?

...swered Apr 29 '10 at 5:33 this. __curious_geekthis. __curious_geek 40.1k2020 gold badges105105 silver badges132132 bronze badges ...
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Visual Studio window which shows list of methods

...class Resharper help: http://www.jetbrains.com/resharper/webhelp/Reference__Windows__File_Structure_Window.html share | improve this answer | follow | ...
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Unique constraint on multiple columns

...ied from technet's documentation, is in the form of: CONSTRAINT constraint_name UNIQUE [ CLUSTERED | NONCLUSTERED ] ( column [ ASC | DESC ] [ ,...n ] ) Therefore, the resuting table definition would be: CREATE TABLE [dbo].[user]( [userID] [int] IDENTITY(1,1) NOT NULL, [fcode] [int] ...
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Why use sprintf function in PHP?

... get the rightly aligned 8 digit and commas separated integer. Using number_format is less convenient in a printf style. – e2-e4 Nov 16 '10 at 6:41 ...
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How do I select a random value from an enumeration?

...ve an array of all values. Then select a random array item. static Random _R = new Random (); static T RandomEnumValue<T> () { var v = Enum.GetValues (typeof (T)); return (T) v.GetValue (_R.Next(v.Length)); } Test: for (int i = 0; i < 10; i++) { var value = RandomEnumValue&l...
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Add list to set?

...rticle. Pythons hashing algorithms are explained on effbot.org and pythons __hash__ function in the python reference. Some facts: Set elements as well as dictionary keys have to be hashable Some unhashable datatypes: list: use tuple instead set: use frozenset instead dict: has no official count...