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Why is using a wild card with a Java import statement bad?
...identified here (e.g. java.sql.Date vs java.util.Date) are easily remedied by other means, not really addressed by specific imports and certainly do not justify insanely pedantic imports on all classes. There is nothing more disconcerting than opening a source file and having to page through 100 im...
Difference between Select Unique and Select Distinct
...
SELECT UNIQUE is old syntax supported by Oracle's flavor of SQL. It is synonymous with SELECT DISTINCT.
Use SELECT DISTINCT because this is standard SQL, and SELECT UNIQUE is non-standard, and in database brands other than Oracle, SELECT UNIQUE may not be recog...
What is lexical scope?
... access its outer levels.
There is another way, called dynamic scope used by the first implementation of Lisp, again in a C-like syntax:
void fun()
{
printf("%d", x);
}
void dummy1()
{
int x = 5;
fun();
}
void dummy2()
{
int x = 10;
fun();
}
Here fun can either access x i...
Capture iframe load complete event
... iframe programatically
It makes sure your load listener is always called by attaching it before the iframe starts loading.
<script>
var iframe = document.createElement('iframe');
iframe.onload = function() { alert('myframe is loaded'); }; // before setting 'src'
iframe.src = '...';
documen...
How to tell Eclipse Workspace?
...d only current workspace. You can change the field to something different by typing in the field or using the browse button. But the field (after clicking other) as provided in this answer will show you your current workspace. I just tested it by typing in the field and creating a new test worksp...
Manipulate a url string by adding GET parameters
I want to add GET parameters to URLs that may and may not contain GET parameters without repeating ? or & .
15 Answe...
Why is Go so slow (compared to Java)?
... Go implementations are forbidden to pre-empt :-) The issue was compounded by the fact that by default Go used only a single host thread no matter how many goroutines were runnable.
– Steve Jessop
Mar 16 '12 at 18:22
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What are allowed characters in cookies?
...to be OK in browsers I've got here; where are you having trouble with it?
By implication of the above:
= is legal to include, but potentially ambiguous. Browsers always split the name and value on the first = symbol in the string, so in practice you can put an = symbol in the VALUE but not the NA...
Overriding fields or properties in subclasses
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Of the three solutions only Option 1 is polymorphic.
Fields by themselves cannot be overridden. Which is exactly why Option 2 returns the new keyword warning.
The solution to the warning is not to append the “new” keyword, but to implement Option 1.
If you need your field to ...
When is TCP option SO_LINGER (0) required?
...we already have such an application and it grows, then we can make it work by tuning twe linger. You change one param, and you suddenly have working application, without investing a budget to implement new architecture.
– bartosz.r
Oct 29 '12 at 11:09
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