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Java - Method name collision in interface implementation
...Something2 ) are expected ? I cannot even expect client code to be able to cast my instance to the appropriate interface , so am I not loosing something by this restriction ? Also note that in this way , when writing classes that actually implement the respective interfaces , we loose the benefit of...
How can I pass a member function where a free function is expected?
...n using a void* interface as they remove the potential for errors due to a cast to the wrong type.
To clarify how to use a function pointer to call a member function, here is an example:
// the function using the function pointers:
void somefunction(void (*fptr)(void*, int, int), void* context) {
...
What is the difference between string primitives and String objects in JavaScript?
...(s).prototype.toString.call = [object String].
The auto-boxing behaviour casts s back and forth to its wrapper type as needed, but the standard operations are incredibly fast since you are dealing with a simpler data type. However auto-boxing and Object.prototype.valueOf have different effects.
I...
How do you stop MySQL on a Mac OS install?
I installed MySQL via MacPorts . What is the command I need to stop the server (I need to test how my application behave when MySQL is dead)?
...
Split value from one field to two
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how can we cast it to integer since membername is varchar.. let memberfirst be of type int. Will it work if i directly use cast() ?
– infinitywarior
Feb 12 '19 at 9:35
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Why does “,,,” == Array(4) in Javascript?
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Try using ===. When using == in Javascript, it will attempt to cast the variables, thus leading to issues like this one. The console is casting Array(4) to the string representation (i.e. Array(4).toString), which is ",,,". The reason the commas are there is that the .toString() functi...
Most concise way to convert a Set to a List
...s when I tried to access list element it giving me error, " java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String" ..don;t know why..it's simple list.get(int) that's it ...any suggestion ?
– CoDe
Jun 20 '14 at 17:45
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Get first day of week in SQL Server
...ion is forbidden by your DBA, the following solution will work:
select *,
cast(DATEADD(day, -1*(DATEPART(WEEKDAY, YouDate)-1), YourDate) as DATE) as WeekStart
From.....
This gives the start of that week. Here I assume that Sundays are the start of weeks. If you think that Monday is the start, you...
Why does Android use Java? [closed]
...
Some points:
Java is a known language, developers know it and don't have to learn it
it's harder to shoot yourself with Java than with C/C++ code since it has no pointer arithmetic
it runs in a VM, so no need to recompile it for every phone out there and easy to secure
large number ...
How do I find the location of Python module sources?
...king at themodule.__file__.
The datetime module, however, is written in C, and therefore datetime.__file__ points to a .so file (there is no datetime.__file__ on Windows), and therefore, you can't see the source.
If you download a python source tarball and extract it, the modules' code can be found...