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Why JSF calls getters multiple times
...uted everytime when the code calls ValueExpression#getValue().
This will normally be invoked one or two times per JSF request-response cycle, depending on whether the component is an input or output component (learn it here). However, this count can get up (much) higher when used in iterating JSF c...
Match two strings in one line with grep
... tried the following but this matches lines that contain either string1 or string2 which not what I want.
21 Answers
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Releasing memory in Python
I have a few related questions regarding memory usage in the following example.
4 Answers
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Conditions for automatic generation of default/copy/move ctor and copy/move assignment operator?
I want to refresh my memory on the conditions under which a compiler typically auto generates a default constructor, copy constructor and assignment operator.
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Why do I get AttributeError: 'NoneType' object has no attribute 'something'?
I keep getting an error that says
10 Answers
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JavaScript checking for null vs. undefined and difference between == and ===
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How do I check a variable if it's null or undefined...
Is the variable null:
if (a === null)
// or
if (a == null) // but see note below
...but note the latter will also be true if a is undefined.
Is it undefined:
if (typeof a === "undefined")
// or
if (a ==...
In C#, should I use string.Empty or String.Empty or “” to intitialize a string?
...rue - due to string interning, it will be created either once per assembly or once per AppDomain (or possibly once for the whole process - not sure on that front). This difference is negligible - massively, massively insignificant.
Which you find more readable is a different matter, however. It's s...
What do we mean by Byte array? [closed]
...ay is an array of bytes (tautology FTW!).
You could use a byte array to store a collection of binary data, for example, the contents of a file. The downside to this is that the entire file contents must be loaded into memory.
For large amounts of binary data, it would be better to use a streaming ...
Could not load file or assembly 'Newtonsoft.Json' or one of its dependencies. Manifest definition do
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Just running the reinstall command worked for me. I didn't need to modify web.config.
– Keith
Aug 10 '15 at 15:59
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Is Java a Compiled or an Interpreted programming language ?
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compiled just-in-time and executed
interpreted
directly executed by a supported processor (bytecode is the native instruction set of some CPUs)
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