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SharedPreferences.onSharedPreferenceChangeListener not being called consistently
..., but eventually, will get garbage collected, removed from the WeakHashMap and stop working.
Keep a reference to the listener in a field of your class and you will be OK, provided your class instance is not destroyed.
i.e. instead of:
prefs.registerOnSharedPreferenceChangeListener(
new SharedPr...
Adjusting Eclipse console size
...imum lines in the console window? My program outputs 2000 lines of numbers and Eclipse truncates it so therefore I am missing some numbers.
...
How to force child div to be 100% of parent div's height without specifying parent's height?
... answer is applicable to legacy browsers without support for the Flexbox standard. For a modern approach, see: https://stackoverflow.com/a/23300532/1155721
I suggest you take a look at Equal Height Columns with Cross-Browser CSS and No Hacks.
Basically, doing this with CSS in a browser compatibl...
How to know if an object has an attribute in Python
...at, if the property is likely to be there most of the time, simply call it and either let the exception propagate, or trap it with a try/except block. This will likely be faster than hasattr. If the property is likely to not be there most of the time, or you're not sure, using hasattr will probably ...
Browsers' default CSS for HTML elements
...
A GitHub repository of all W3C HTML spec and vendor default CSS stylesheets can be found here
1. Default Styles for Firefox
2. Default Styles for Internet Explorer
3. Default Styles for Chrome / Webkit
4. Default Styles for Opera
5. Default Styles for HTML4 (W3...
How to create a loop in bash that is waiting for a webserver to respond?
...Apr 18 '14 at 15:43
Serge Stroobandt
17.2k88 gold badges7676 silver badges7676 bronze badges
answered Jan 17 '14 at 15:22
...
JavaScript/regex: Remove text between parentheses
...ce(/\s*\(.*?\)\s*/g, ''));
That'll also replace excess whitespace before and after the parentheses.
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In a django model custom save() method, how should you identify a new object?
...exes on other fields). In that case, you could still have a new record in hand, but be unable to save it.
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Add leading zeroes to number in Java? [duplicate]
...tting this result? This function fails if num has more digits than digits, and I feel like it should be in the library somewhere (like Integer.toString(x,"%3d") or something)
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What does the exclamation mark do before the function?
...put () at the end: !function foo() {}() which has higher precedence than ! and instantly calls the function.
So what the author is doing is saving a byte per function expression; a more readable way of writing it would be this:
(function(){})();
Lastly, ! makes the expression return true. This i...