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How to get the first element of the List or Set? [duplicate]
... assume that you have a List<String> strings that you want the first item from.
There are several ways to do that:
Java (pre-8):
String firstElement = null;
if (!strings.isEmpty() && strings.size() > 0) {
firstElement = strings.get(0);
}
Java 8:
Optional<String> firs...
json_encode is returning NULL?
For some reason the item "description" returns NULL with the following code:
10 Answers
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What is the best CSS Framework and are they worth the effort?
...dering if anyone else had come across CSS frameworks, suggest which is the best and if they are worth the effort?
23 Answer...
Set selected index of an Android RadioGroup
...RadioButton rbt = new RadioButton(this);//, null, // R.style.RadioGroupItem); RadioButton rbt = (RadioButton) getLayoutInflater().inflate( R.layout.tmpltradiobutton, null); rbt.setId(i); rbt.setText(lookupTypes.get(i).getValue()); rbt.setTag(lookupTypes.get(i)); rbtnGro...
Metadata file … could not be found error when building projects
...guration Manager refers to the Build menu -> Configuration Manager menu item.
– John Kurlak
Aug 15 '12 at 17:58
4
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Ternary operator in AngularJS templates
..._if_false)
{true: 'result_if_true', false: 'result_if_false'}[condition]
item 2. above creates an object with two properties. The array syntax is used to select either the property with name true or the property with name false, and return the associated value.
E.g.,
<li class="{{{true: 'myC...
How can I get enum possible values in a MySQL database?
...t to convert '' into just '.
The following will return $trimmedvals array items without quotes:
$trimmedvals = array();
foreach($vals as $key => $value) {
$value=trim($value, "'");
$trimmedvals[] = $value;
}
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How to add 2 buttons into the UINavigationbar on the right side without IB?
...
With iOS 5+ it's as easy as:
UIBarButtonItem *btnShare = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:@selector(share)];
UIBarButtonItem *btnRefresh = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarB...
Method call if not null in C#
...he arguments would have side effects.
And chaining is possible: myObject?.Items?[0]?.DoSomething()
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End of support for python 2.7?
...
you should read this carefully (ref : https://news.ycombinator.com/item?id=7582300 ):
There are a lot of comments here from people who aren't on the python-dev list and don't really understand what this diff actually means.
The core developers are not required to maintain 2.7 post-2015...