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Conditional Variable vs Semaphore
... Semaphores are good for producer/consumer situations where producers are allocating resources and consumers are consuming them.
Think about if you had a soda vending machine. There's only one soda machine and it's a shared resource. You have one thread that's a vendor (producer) who is responsi...
Elegant way to search for UTF-8 files with BOM?
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For a Windows user, see this (good PHP script for finding the BOM in your project).
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Eclipse: Set maximum line length for auto formatting?
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For HTML / PHP / JSP / JSPF: Web -> HTML Files -> Editor -> Line width
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When is it better to use String.Format vs string concatenation?
...ring via ToString(). Then the total length is computed and only one string allocated (with the total length). Finally, each string is copied into the resulting string via wstrcpy in some unsafe piece of code.
Reasons String.Concat is way faster? Well, we can all have a look what String.Format is do...
how to run two commands in sudo?
... can run two Db2 commands from a command line? (They will be called from a PHP exec command.)
10 Answers
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Regex doesn't work in String.matches()
...e \Apattern) and Python 3.x has got a nice .fullmatch() method. In JS, Go, PHP and .NET, the there are no regex methods that anchor the match implicitly. ElasticSearch, XML Schema and HTML5/Validators Angluar patterns are always anchored by default. In Swift/Objective C, there is a way to anchor th...
How do I check if a type is a subtype OR the type of an object?
...throws; 3) you don't actually need the new instance, so you have a useless allocation. The accepted answer is better (though not perfect).
– Marcel Popescu
Dec 7 '17 at 19:37
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Will the base class constructor be automatically called?
...cation.Current.Dispatcher;
//---for some reason this member is not allocated after serialization
if (_properties == null) _properties = new Dictionary<object, string>();
_properties.Clear();
RegisterProperties();
}
#endregion Behavior
#region INoti...
Awaiting multiple Tasks with different results
...ever(x.Result, y.Result, z.Result);
}
but this does lots of overhead and allocates various arrays (including the params Task[] array) and lists (internally). It works, but it isn't great IMO. In many ways it is simpler to use an async operation and just await each in turn:
async Task<string>...
How to store decimal values in SQL Server?
... can have after the decimal point.
http://www.tsqltutorials.com/datatypes.php has descriptions for all the datatypes.
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