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What is a Java ClassLoader?
...on an 'as needed' basis. And when a loaded class depends on another class, then that class is loaded as well.
When a Java application is launched, the first class to run (or the entry point into the application) is the one with public static void method called main(). This class usually has referen...
How much size “Null” value takes in SQL Server
... following link claims that if the column is variable length, i.e. varchar then NULL takes 0 bytes (plus 1 byte is used to flag whether value is NULL or not):
How does SQL Server really store NULL-s
The above link, as well as the below link, claim that for fixed length columns, i.e. char(10) or ...
What's the difference of “./configure” option “--build”, “--host” and “--target”?
...server :1234 a.out" to start debugging and listen on port 1234.
You would then build your debugging client (which connects to and controls the gdbserver) with
./configure --build=powerpc --host=i686 --target=mips
which you would copy to your x86 laptop so that in the field you could run "gdbcl...
Android Spanned, SpannedString, Spannable, SpannableString and CharSequence
...ch as:
Highlighting search results
Allowing users to enter in rich text, then using Html.toHtml() to persist that formatted text in an HTML rendition
In which cases is it best to avoid using them?
They are singularly awful at combating baldness, snow removal, heat pump repair, making a souf...
When to use static classes in C# [duplicate]
...air at the same time. If you ever need two configurations at the same time then you instantly know you will want to instantiate it as an object so each object can be unique and exist at the same time.
On the other end, static functions tend to lend more to actions which do not belong to a real-worl...
Difference between natural join and inner join
...on EmployeeID. Employees also has a ManagerID field. Everything's fine. Then, some day, someone adds a ManagerID field to the Customers table. Your join will not break (that would be a mercy), instead it will now include a second field, and work incorrectly. Thus, a seemingly harmless change ca...
PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
...nd $max.
getToken($length) creates an alphabet to use within the token and then creates a string of length $length.
Source: http://us1.php.net/manual/en/function.openssl-random-pseudo-bytes.php#104322
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Chrome extension: accessing localStorage in content script
...
Sometimes it may be better to use chrome.storage API. It's better then localStorage because you can:
store information from your content script without the need for
message passing between content script and extension;
store your data as JavaScript objects without serializing them to JS...
How to trigger event when a variable's value is changed?
...tudio. I want to create some code so that when a variable has a value of 1 then a certain piece of code is carried out.
I know that I can use an if statement but the problem is that the value will be changed in an asynchronous process so technically the if statement could be ignored before the value...
How to get the number of characters in a std::string?
... strlen(str.c_str()) << std::endl; // convert C++ string to C-string then call strlen
return 0;
}
Output:
6
6
6
6
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