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Programmatically go back to the previous fragment in the backstack
...kStack() methods (there are several to choose from)
http://developer.android.com/reference/android/app/FragmentManager.html#popBackStack()
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JSON Naming Convention (snake_case, camelCase or PascalCase) [closed]
...entions, none of which is "The" standard overall. One of them could be considered the standard for specific platform, but given that JSON is used for interoperability between platforms that may or may not make much sense.
sh...
Add UIPickerView & a Button in Action sheet - How?
...o customize the contents of an ActionSheet, as it can lead to serious invalid context errors in iOS 7. I just spent a few hours working through this problem and ultimately decided to take a different approach. I replaced the call to show the action sheet with a modal view controller containing a sim...
How to start a background process in Python?
...rs is now recommended in the docs
(Note that the subprocess module provides more powerful facilities for spawning new processes and retrieving their results; using that module is preferable to using these functions.)
If you want your process to start in the background you can either use syst...
Unit testing with Spring Security
...a JUnit test, etc. The real limiting factor of a Singleton is when it provides an implementation that is inflexible to different environments.
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How to position one element relative to another with jQuery?
I have a hidden DIV which contains a toolbar-like menu.
8 Answers
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Create table in SQLite only if it doesn't exist already
....sqlite.org/lang_createtable.html:
CREATE TABLE IF NOT EXISTS some_table (id INTEGER PRIMARY KEY AUTOINCREMENT, ...);
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Default text which won't be shown in drop-down list
...solution worked perfectly fine for me so I made my research in order to avoid any Js and CSS, but just sticking with HTML.
Adding a value of selected to the item we want to appear as a header forces it to show in the first place as a placeholder.
Something like:
<option selected disabled>Cho...
REST API Login Pattern
...nception (for example JavaScript). Secret cryptographic key should be provided by server to client as resource, and client uses it to calculate hash code for every request.
There are a lot of examples of HMAC implementations, but I'd like you to pay attention to the following three:
Authenticati...
PHP global in functions
... want to use them. A function call should not have to rely on anything outside, e.g.
function fn()
{
global $foo; // never ever use that
$a = SOME_CONSTANT // do not use that
$b = Foo::SOME_CONSTANT; // do not use that unless self::
$c = $GLOBALS['foo']; // ...