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Setting Short Value Java
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In Java, integer literals are of type int by default. For some other types, you may suffix the literal with a case-insensitive letter like L, D, F to specify a long, double, or float, respectively. Note it is common practice to use uppercase letters for better readab...
http HEAD vs GET performance
... or is slow to retrieve at the server, you might not see a measurable gain by using HEAD instead of GET. It could be that retrieving the meta data is not any faster than retrieving the entire resource.
You could implement both options and benchmark them to see which is faster, but rather than micro...
Leading zeros for Int in Swift
...chnically it is not a part of the Swift language but a capability provided by the Foundation framework. Note that both import UIKit and import Cocoa include Foundation so it isn't necessary to import it again if you've already imported Cocoa or UIKit.
The format string can specify the format of ...
Mipmap drawables for icons
...ity. For example on an hdpi tablet the launcher might load the xhdpi icon. By placing your launcher icon in the mipmap-xhdpi directory, it will not be stripped the way a drawable-xhdpi directory is when building an APK for hdpi devices. If you're building a single APK for all devices, then this does...
How do I remove code duplication between similar const and non-const member functions?
...on p. 23, in Item 3 "Use const whenever possible," in Effective C++, 3d ed by Scott Meyers, ISBN-13: 9780321334879.
Here's Meyers' solution (simplified):
struct C {
const char & get() const {
return c;
}
char & get() {
return const_cast<char &>(static_cast<cons...
How do I restrict a float value to only two places after the decimal point in C?
...k. This should be really easy to see if you write out some decimal values by hand and play around with multiples of 10. Suppose you're working with the value 1.23456789, and want to round it to 3 decimal places. The operation available to you is round to integer. So, how do you move the first th...
R script line numbers at error?
...l debugging suspects:
debug()
browser()
options(error=recover) [followed by options(error = NULL) to revert it]
You might want to look at this related post.
[Edit:] Sorry...just saw that you're running this from the command line. In that case I would suggest working with the options(error) fun...
What is the difference between encrypting and signing in asymmetric encryption?
... your public key itself, which you have earlier generated for free, signed by an authority which might or might not charge you money for that.
– Quassnoi
Jul 26 '19 at 10:45
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UIPopovercontroller dealloc reached while popover is still visible
...en you don't need to keep a reference to the popover because it is managed by the presentation controller.
Code example (works both on iPhone and iPad):
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = UIImagePickerControllerSour...
Java default constructor
...class constructor with no arguments". Uninitialised fields are initialised by other mechanisms also described in this reference. +1 to OrangeDog for providing a good reference.
– Superole
Jan 28 '14 at 8:38
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