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Do I need to close() both FileReader and BufferedReader?
...critical it is that you don't deprive the OS of resources it might want to allocate to other programs.
The Closeable interface can be used if a wrapper constructor is likely to fail in Java 5 or 6:
Reader reader = new FileReader(fileName);
Closeable resource = reader;
try {
BufferedReader buffer...
When converting a project to use ARC what does “switch case is in protected scope” mean?
...itch and the compiler can't tell if there's a clear path to the required dealloc point.
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HashMap and int as key
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@Snake SparseArray If you allocate a bunch of memory boxing and unboxing ints as you would with a HashMap, the vm will need to pause execution for garbage collection sooner. This is important if you are trying to do something frequently and quickly.
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How to make URL/Phone-clickable UILabel?
...e:UIFontTextStyleHeadline]};
_label.attributedText = [[NSAttributedString alloc]initWithString:string attributes:attributes];
[_label setFont:[_label.font fontWithSize:13.0]];
[_label setLinkForSubstring:@"Terms of Use" withLinkHandler:^(FRHyperLabel *label, NSString *substring){
[[UIApplicati...
How can I give the Intellij compiler more heap space?
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In my case the error was caused by the insufficient memory allocated to the "test" lifecycle of maven. It was fixed by adding <argLine>-Xms3512m -Xmx3512m</argLine> to:
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven....
Store a closure as a variable in Swift
...eComplete) onHideComplete ();
}
@end
PopupView * popupView = [[PopupView alloc] init]
popupView.onHideComplete = ^() {
...
}
Swift
class PopupView: UIView {
var onHideComplete: (() -> Void)?
@IBAction func hideButtonDidTouch(sender: AnyObject) {
// Do something
....
How do you clear a stringstream variable?
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It's not good for all situation. This would re-allocate the buffer every time while mm.str("") would not.
– Shital Shah
Dec 24 '16 at 1:29
3
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iOS Detect 3G or WiFi
...If this were just in a method, reachability would go out of scope and be dealloced at the end of the method and stopNotifier would be called implicitly.
– James Webster
Nov 9 '11 at 21:35
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Can I load a UIImage from a URL?
... is loading an image from url:
UIImageView *yourImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"loading.png"]];
[yourImageView setContentMode:UIViewContentModeScaleAspectFit];
//Request image data from the URL:
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEU...
Do I need to heartbeat to keep a TCP connection open?
...is using DoS attack prevention systems, it (the server) may remove all the allocated resources for that particular connection, after the it detected in-activity for a specified period.
Their no mandate to implement any heartbeat mechanisms.
But its is good if you are designing an application, wh...