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Java equivalent to #region in C#
...
With Android Studio, try this:
//region VARIABLES
private String _sMyVar1;
private String _sMyVar2;
//endregion
Careful : no blank line after //region ...
And you will get:
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iPhone UITextField - Change placeholder text color
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Since the introduction of attributed strings in UIViews in iOS 6, it's possible to assign a color to the placeholder text like this:
if ([textField respondsToSelector:@selector(setAttributedPlaceholder:)]) {
UIColor *color = [UIColor blackColor];
textField....
How can I count occurrences with groupBy?
...il.*;
import java.util.stream.*;
class Test {
public static void main(String[] args) {
List<String> list = new ArrayList<>();
list.add("Hello");
list.add("Hello");
list.add("World");
Map<String, Long> counted = list.stream()
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Is there a pattern for initializing objects created via a DI container
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Thus, the interface should simply be:
public interface IMyIntf
{
string RunTimeParam { get; }
}
Now define the Abstract Factory:
public interface IMyIntfFactory
{
IMyIntf Create(string runTimeParam);
}
You can now create a concrete implementation of IMyIntfFactory that creates con...
UnicodeDecodeError: 'utf8' codec can't decode byte 0xa5 in position 0: invalid start byte
...t be encoded/decoded. One simple way to avoid this error is to encode such strings with encode() function as follows (if a is the string with non-ascii character):
a.encode('utf-8').strip()
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UINavigationController “back button” custom text?
... set here. If the previous view's title contains more than the limit of 11 chars, then the next view's back button will simply say "Back". There's no way around it except to create a new nav bar item from scratch as shown in the top-voted answer here.
– ray
Dec...
NSUserDefaults - How to tell if a key exists
...l returning nil if the key doesn't exist.
func integerOptional(forKey: String) -> Int? {
return self.object(forKey: forKey) as? Int
}
/// Convenience method to wrap the built-in .double(forKey:) method in an optional returning nil if the key doesn't exist.
func doubleOptio...
ASP.NET MVC 4 Custom Authorize Attribute with Permission Codes (without roles)
...rizeUserAttribute : AuthorizeAttribute
{
// Custom property
public string AccessLevel { get; set; }
protected override bool AuthorizeCore(HttpContextBase httpContext)
{
var isAuthorized = base.AuthorizeCore(httpContext);
if (!isAuthorized)
{
...
How can I add a column that doesn't allow nulls in a Postgresql database?
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Or, create a new table as temp with the extra column, copy the data to this new table while manipulating it as necessary to fill the non-nullable new column, and then swap the table via a two-step name change.
Yes, it is more complicated, but you may need to do it...
What is the difference between atan and atan2 in C++?
...ple values is (-pi,pi] but atan2 has the range [-pi,pi] so it includes one extra value -pi from another branch due to atan2(-0.0,x) for x<0.
– Z boson
Jul 2 '15 at 11:27
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