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Difference between sampling and profiling in jVisualVM
VisualVM has two separate tabs for sampling and profiling. What is the difference between sampling and profiling in VisualVM?
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How do I add the contents of an iterable to a set?
...he square brackets in the representation of the set. I had never noticed before that they're represented like that.
– Ian Mackinnon
Oct 28 '10 at 17:33
7
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Can we use join for two different database tables?
Can we use the join operation for two tables from different databases? If yes, how do I do it?
2 Answers
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How to convert an array to object in PHP?
...rough your array while re-assigning the values:
$object = new stdClass();
foreach ($array as $key => $value)
{
$object->$key = $value;
}
As Edson Medina pointed out, a really clean solution is to use the built-in json_ functions:
$object = json_decode(json_encode($array), FALSE);
Thi...
Understanding colors on Android (six characters)
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If you provide 6 hex digits, that means RGB (2 hex digits for each value of red, green and blue).
If you provide 8 hex digits, it's an ARGB (2 hex digits for each value of alpha, red, green and blue respectively).
So by removing the final 55 you're changing from A=B4, R=55, G=55, ...
How to request a random row in SQL?
... SQL to Select a random row from a database table. It goes through methods for doing this in MySQL, PostgreSQL, Microsoft SQL Server, IBM DB2 and Oracle (the following is copied from that link):
Select a random row with MySQL:
SELECT column FROM table
ORDER BY RAND()
LIMIT 1
Select a random row ...
Node.JS constant for platform-specific new line?
Is there a constant available in Node.JS for a newline character that is specific to the platform the application is running on?
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How to make PDF file downloadable in HTML link?
I am giving link of a pdf file on my web page for download, like below
13 Answers
13
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How to run Ruby code from terminal?
...ew lines of Ruby code from terminal, but I can't find the needed parameter for it.
2 Answers
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Install shows error in console: INSTALL FAILED CONFLICTING PROVIDER
...as listed in android:authorities must be unique. Quoting the documentation for this attribute:
To avoid conflicts, authority names should use a Java-style naming convention (such as com.example.provider.cartoonprovider). Typically, it's the name of the ContentProvider subclass that implements th...