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What does map(&:name) mean in Ruby?
...want to do things point-free style. An example is to check if there is any string in an array that is equal to the string "foo". There is the conventional way:
["bar", "baz", "foo"].any? { |str| str == "foo" }
And there is the point-free way:
["bar", "baz", "foo"].any?(&"foo".method(:==))
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How do I check if an HTML element is empty using jQuery?
... A slightly more compressed version can take advantage of empty string's falsy-ness: if(!$.trim($("selector").html())
– Brandon Belvin
Aug 8 '13 at 15:41
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Adding minutes to date time in PHP
...= $time->format('Y-m-d H:i');
The ISO 8601 standard for duration is a string in the form of P{y}Y{m1}M{d}DT{h}H{m2}M{s}S where the {*} parts are replaced by a number value indicating how long the duration is.
For example, P1Y2DT5S means 1 year, 2 days, and 5 seconds.
In the example above, we ...
Reference — What does this symbol mean in PHP?
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@AcidShout $a - $b works for numbers, but not strings, objects, or arrays.
– mcrumley
Sep 25 '15 at 18:29
49
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{" was not expected.} Deserializing Twitter XML
...ot(Namespace = "www.contoso.com", ElementName = "MyGroupName", DataType = "string", IsNullable=true)]
Or specify the root attribute when de serializing at runtime.
XmlRootAttribute xRoot = new XmlRootAttribute();
xRoot.ElementName = "user";
// xRoot.Namespace = "http://www.cpandl.com";
xRoot.IsNu...
How Should I Declare Foreign Key Relationships Using Code First Entity Framework (4.1) in MVC3?
...es
// Foreign key to customer
[ForeignKey("Customer")]
public string CustomerID { get; set; }
public virtual Customer Customer { get; set; }
}
The ForeignKeyAttribute constructor takes a string as a parameter: if you place it on a foreign key property it represents the name of the...
How to suppress scientific notation when printing float values?
...ate
Starting in Python 3.6, this can be simplified with the new formatted string literal, as follows:
>>> f'{a:.20f}'
'-0.00000000000000007186'
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T-SQL stored procedure that accepts multiple Id values
...est to a universal "best" approach.
The Iterative Method. Pass a delimited string and loop through it.
Using the CLR. SQL Server 2005 and higher from .NET languages only.
XML. Very good for inserting many rows; may be overkill for SELECTs.
Table of Numbers. Higher performance/complexity than simp...
Correct way to define Python source code encoding
...egexp - "match", by long-standing convention, means "match anywhere in the string", contrary to Python's API).
– martinjs
Dec 7 '15 at 10:49
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Get the current user, within an ApiController action, without passing the userID as a parameter
...n ApiController.
So the following two statements are basically the same:
string id;
id = User.Identity.GetUserId();
id = RequestContext.Principal.Identity.GetUserId();
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