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how to use XPath with XDocument?
...r nodes (which aren't there now but could be added by later changes to the format of the file). However your solution is surely the right one.
– Marco Mp
Feb 21 '13 at 14:12
12
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How does one make random number between range for arc4random_uniform()?
... die only has 6 sides so I imported Foundation for access to arc4random_uniform(UInt32). I attempted using the range of (1..7) to avoid randomly getting 0 however that returned an error which I didn't enjoy too much. I tried to do this:
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Correct way to use get_or_create?
I'm trying to use get_or_create for some fields in my forms, but I'm getting a 500 error when I try to do so.
5 Answers
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What is the garbage collector in Java?
...of objects which are not being used by a Java application anymore. It is a form of automatic memory management.
When a typical Java application is running, it is creating new objects, such as Strings and Files, but after a certain time, those objects are not used anymore. For example, take a look a...
When someone writes a new programming language, what do they write it IN?
...t has to be written... this is a brilliant brilliant answer in all shapes, forms and information :-)
– Lukáš Řádek
Jan 28 '17 at 0:36
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Explain the encapsulated anonymous function syntax
...e grammar of a FunctionDeclaration looks like this:
function Identifier ( FormalParameterListopt ) { FunctionBody }
And FunctionExpressions:
function Identifieropt ( FormalParameterListopt ) { FunctionBody }
As you can see the Identifier (Identifieropt) token in FunctionExpression is optional,...
POST JSON to API using Rails and HTTParty
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I solved this by adding .to_json and some heading information
@result = HTTParty.post(@urlstring_to_post.to_str,
:body => { :subject => 'This is the screen name',
:issue_type => 'Application Problem',
:status => 'Open',
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Will strlen be calculated multiple times if used in a loop condition?
...d is far more preferable since that's essentially the loop that will be performed by strlen anyway.
– mlibby
Jul 6 '12 at 15:35
26
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Git diff to show only lines that have been modified
...lly be used as patches to source files, which is impossible without that information. The only way to remove it would be to post-process it yourself, such as via git diff | egrep "^(\+|-) ".
– Chris Hayes
Sep 15 '13 at 9:23
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Why do we not have a virtual constructor in C++?
...tors?
A virtual call is a mechanism to get work done given partial
information. In particular, "virtual" allows us to call a function
knowing only any interfaces and not the exact type of the object. To
create an object you need complete information. In particular, you
need to know the e...