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Using ZXing to create an Android barcode scanning app [duplicate]
...ode reader application which — via Android's intent mechanism — can be called by other applications who wish to integrate barcode scanning.
The easiest way to do this is to call the ZXing SCAN Intent from your application, like this:
public Button.OnClickListener mScan = new Button.OnClickList...
(HTML) Download a PDF file instead of opening them in browser when clicked
...e outputting a PDF
header('Content-type: application/pdf');
// It will be called downloaded.pdf
header('Content-Disposition: attachment; filename="downloaded.pdf"');
// The PDF source is in original.pdf
readfile('original.pdf');
?>
and use httacces to redirect (rewrite) to the PHP file instea...
Read-only and non-computed variable properties in Swift
...wing in Objective-C. I have readonly properties, and they cannot be individually changed. However, using a specific method, the properties are changed in a logical way.
...
How to iterate a loop with index and element in Swift
...): \(element)")
}
Before Swift 3.0 and after Swift 2.0, the function was called enumerate():
for (index, element) in list.enumerate() {
print("Item \(index): \(element)")
}
Prior to Swift 2.0, enumerate was a global function.
for (index, element) in enumerate(list) {
println("Item \(in...
Using Linq to group a list of objects into a new grouped list of list of objects
...
var groupedCustomerList = userList
.GroupBy(u => u.GroupID)
.Select(grp => grp.ToList())
.ToList();
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What is the worst real-world macros/pre-processor abuse you've ever come across?
... is normally an atomic function defined in the Windows API. So when people call InterlockedIncrement, they expect to call into a function that is guaranteed to be executed atomically. Instead, someone defined a macro with the same name, which evaluates to a plain, non-atomic increment
...
How do I make python wait for a pressed key?
...
@JonTirsen that's because Python 2.7 has a function called input which evaluates the string you input. To fix, use raw_input
– Samy Bencherif
Dec 3 '15 at 3:16
...
Glorified classes in the Java language
...ic method creation, serialization handling, etc.), but those could theoretically be accomplished with code - it is just a lot of boilerplate, and some of the constraints could not be enforced in subclasses (e.g. the special subclassing rules) but what you could never accomplish without the priviledg...
How do I copy a string to the clipboard on Windows using Python?
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It works if I don't call r.destroy(). Once I call that, the clipboard becomes empty and pressing Ctrl-V may cause the target app to freeze. (OS: Windows 7 x64)
– netvope
Aug 24 '13 at 3:45
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Java Singleton and Synchronization
...be loaded when it is needed. That means that the first time getInstance is called, InstanceHolder will be loaded and instance will be created, and since this is controlled by ClassLoaders, no additional synchronization is necessary.
...