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Proper usage of Optional.ifPresent()
...ight be used to anonymous classes and thus understand what the lambda does by seeing an anonymous class equivalent. That's the point.
– JB Nizet
Jun 15 '14 at 10:21
1
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Removing items from a list [duplicate]
...'t and shouldn't modify a list while iterating over it. You can solve this by temporarely saving the objects to remove:
List<Object> toRemove = new ArrayList<Object>();
for(Object a: list){
if(a.getXXX().equalsIgnoreCase("AAA")){
toRemove.add(a);
}
}
list.removeAll(toRem...
What is the difference between Left, Right, Outer and Inner Joins?
...er table. OUTER joins tend to make result sets larger, because they won't by themselves remove any records from the set. You must also qualify an OUTER join to determine when and where to add the NULL values:
LEFT means keep all records from the 1st table no matter what and insert NULL values wh...
Populating spinner directly in the layout xml
...ite that code in activity, then remove getActivity.
a = (Spinner) findViewById(R.id.fromspin);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this.getActivity(),
R.array.weight, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResou...
UITableViewCell, show delete button on swipe
...eeds to be implemented if you are going to be returning NO for some items. By default, all items are editable.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
// Return YES if you want the specified item to be editable.
return YES;
}
// Override ...
How do you add multi-line text to a UIButton?
...ing to allow multiple lines:
button.titleLabel.lineBreakMode = NSLineBreakByWordWrapping;
// you probably want to center it
button.titleLabel.textAlignment = NSTextAlignmentCenter; // if you want to
[button setTitle: @"Line1\nLine2" forState: UIControlStateNormal];
For iOS 5 and below use the fo...
Is it possible to view bytecode of Class file? [duplicate]
Java source code is compiled into bytecode, which is actually in the class file. Is it possible to view bytecode of a compiled class?
...
How to print a groupby object
...
Simply do:
grouped_df = df.groupby('A')
for key, item in grouped_df:
print(grouped_df.get_group(key), "\n\n")
This also works,
grouped_df = df.groupby('A')
gb = grouped_df.groups
for key, values in gb.iteritems():
print(df.ix[values], "\n\n...
C# XML Documentation Website Link
... You can read about Sandcastle here btw. "Sandcastle, created by Microsoft, is a free tool used for creating MSDN-style documentation from .NET assemblies and their associated XML comment files. It is command-line based and has no GUI front-end, project management features, or an automa...
Why are function pointers and data pointers incompatible in C/C++?
...is an invention of the C89 Committee. Adoption of this type was stimulated by the desire to specify function prototype arguments that either quietly convert arbitrary pointers (as in fread) or complain if the argument type does not exactly match (as in strcmp). Nothing is said about pointers to func...