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The difference between Classes, Objects, and Instances
...lues that is the type Y.
So that's what the term "instance" really means: it describes a relationship not a thing.
The type system of the Java programming language supports two kinds of types, primitive types and reference types. The reference types are further divided into the classes and array ...
How to maintain aspect ratio using HTML IMG tag
...ing an img tag of HTML to show a photo in our application. I have set both its height and width attribute to 64. I need to show any image resolution (e.g. 256x256, 1024x768, 500x400, 205x246, etc.) as 64x64. But by setting the height and width attributes of an img tag to 64, it's not maintaining the...
When to use DataContract and DataMember attributes?
...ry confused about the DataContract attribute in WCF. As per my knowledge it is used for serializating user defined type like classes. I wrote one class which is exposed at client side like this.
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Forking from GitHub to Bitbucket
I'm working on a project based on CakePHP , that's hosted on GitHub . My project is being hosted on Bitbucket . Both of them use git . Basically I'd like to create a ‘fork’ (I don't know if I'm using the right terms, since I'm new to git ) of CakePHP in my Bitbucket repository, in order t...
How can I check if a string represents an int, without using try/except?
...esents an integer (e.g., '3' , '-17' but not '3.14' or 'asfasfas' ) Without using a try/except mechanism?
18 Answers
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Read lines from a file into a Bash array [duplicate]
...ision based on comment from BinaryZebra's comment
and tested here. The addition of command eval allows for the expression to be kept in the present execution environment while the expressions before are only held for the duration of the eval.
Use $IFS that has no spaces\tabs, just newlines/CR
$ I...
Grunt watch error - Waiting…Fatal error: watch ENOSPC
Why do I get the Waiting...Fatal error: watch ENOSPC when I run the watch task ?
How do I solve this issue?
7 Answers
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JPA EntityManager: Why use persist() over merge()?
EntityManager.merge() can insert new objects and update existing ones.
15 Answers
15
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iPhone Debugging: How to resolve 'failed to get the task for process'?
...to run the app on the device (I have done this several times in the past, without any problem).
15 Answers
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What exceptions should be thrown for invalid or unexpected parameters in .NET?
...d ArgumentOutOfRangeException.
ArgumentException – Something is wrong with the argument.
ArgumentNullException – Argument is null.
ArgumentOutOfRangeException – I don’t use this one much, but a common use is indexing into a collection, and giving an index which is to large.
There are oth...