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What are the differences between PMD and FindBugs?
...method may return null, reference comparison of Boolean values, impossible cast, 32bit int shifted by an amount not in the range of 0-31, a collection which contains itself, equals method always returns true, an infinite loop, etc.
Usually each of them finds a different set of problems. Use both. T...
How to handle button clicks using the XML onClick within Fragments
...ckable someFragment;
//...onCreate, etc. instantiating your fragments casting to your interface.
public void myClickMethod(View v) {
someFragment.myClickMethod(v);
}
Fragment:
public class SomeFragment implements XmlClickable {
//...onCreateView, etc.
@Override
public void myClickMet...
How to create id with AUTO_INCREMENT on Oracle?
...r replace trigger FOO_trg
before insert on FOO
for each row
begin
select cast(sys_guid() as varchar2(32)) into :new.x from dual; -- string version
-- select sys_guid() into :new.x from dual; -- raw version
end;
/
update:
Oracle 12c introduces these two variants that don't...
SQL WHERE.. IN clause multiple columns
...te that if your columns are numeric, some SQL dialects will require you to cast them to strings first. I believe SQL server will do this automatically.
To wrap things up: As usual there are many ways to do this in SQL, using safe choices will avoid suprises and save you time and headaces in the l...
C# difference between == and Equals()
... comparisons should only be performed IMHO with values that are explicitly cast to matching types. The comparison of a float to something other than a float, or a double to something other than a double, strikes me as a major code smell that should not compile without diagnostics.
...
Example of UUID generation using Boost in C++
...streaming support - there is a stringstream example. Or let boost::lexical_cast<std::string>(uuid) do that for you.
– Georg Fritzsche
Jul 15 '10 at 16:41
15
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What is the difference between instanceof and Class.isAssignableFrom(…)?
...Yep, instanceof is a bytecode that uses essentially the same logic as checkcast (the bytecode behind casting). It will inherently be faster than the other options, regardless of degree of JITC optimization.
– Hot Licks
Jul 5 '13 at 0:11
...
What is a “slug” in Django?
...If I may provide some historical context :
The term "slug" has to do with casting metal—lead, in this case—out of which the press fonts were made. Every paper then had its fonts factory regularly re-melted and recast in fresh molds, since after many prints they became worn out. Apprentices like...
What is the difference between gravity and layout_gravity in Android?
...y;
...
Button button = (Button) findViewById(R.id.MyButtonId);
// need to cast to LinearLayout.LayoutParams to access the gravity field
LayoutParams params = (LayoutParams)button.getLayoutParams();
params.gravity = Gravity.BOTTOM;
button.setLayoutParams(params);
For horizontal LinearLayout conta...
Comparing two byte arrays in .NET
...ner ! The previous solution was slightly more efficient since it saved the cast to IStructuralEquatable (an array is statically known to be IStructuralEquatable), but indeed your suggestions makes the method work for null arguments as well.
– Ohad Schneider
Mar...