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what is the difference between a portlet and a servlet?
... effect from normal servets (See Struts + Tiles for an example of how) the extra bit from the portlets is that the portlets are in a richer environment provided by the Portal, extra APIs are provided so that what is displayed by any portlet can be configured by individual users to their preferences,...
Indenting #defines
...eprocessor did not allow for space between the start of a line and the "#" character; the leading "#" had to always be placed in the first column.
Pre-ANSI C compilers are non-existent these days. Use which ever style (space before "#" or space between "#" and the identifier) you prefer.
http://ww...
querySelector and querySelectorAll vs getElementsByClassName and getElementById in JavaScript
...e to escape it. (The selector escape character has special meaning in a JS string too, so you have to escape that too).
document.querySelector("#view\\:_id1\\:inputText1")
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What is a mixin, and why are they useful?
...and from XML. You want the type to provide a "ToXML" method that returns a string containing an XML fragment with the data values of the type, and a "FromXML" that allows the type to reconstruct its data values from an XML fragment in a string. Again, this is a contrived example, so perhaps you use ...
Adding iOS UITableView HeaderView (not section header)
...o do that, you need to be able to calculate the height of the cell given a string, and pass that value in for heightForRowAtIndexPath. You can use NSString's method sizeWithFont:constrainedToSize: function to figure out the height of the text when constrained to a size.
– Mark
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How does one write code that best utilizes the CPU cache to improve performance?
...rewriting techniques known as tiling or blocking all strive to avoid those extra memory fetches.
While there are some rules of thumb for this rewrite exercise, you typically have to carefully consider loop carried data dependencies, to ensure that you don't affect the semantics of the program.
The...
How do I import .sql files into SQLite 3?
...d - you need ; on the end of your statements:
create table server(name varchar(50),ipaddress varchar(15),id init);
create table client(name varchar(50),ipaddress varchar(15),id init);
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The case against checked exceptions
...lly defined by a method signature.
Here fopen requires that you pass it a string (or a char* in the case of C). If you give it something else you get a compile-time error. You didn't follow the protocol - you're not using the API properly.
In some (obscure) languages the return type is part of the...
How do I give text or an image a transparent background using CSS?
... Why not do it with a pseudo element like :after and avoid the extra markup?
– AndFisher
Dec 6 '16 at 9:07
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What does “Could not find or load main class” mean?
...with signature, return type and modifiers given by public static void main(String[]). (Note, the method argument's name is NOT part of the signature.)
Call that method passing it the command line arguments ("fred", "joe", "bert") as a String[].
Reasons why Java cannot find the class
When you get...