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How to lazy load images in ListView in Android
...a.io.IOException;
public class DrawableManager {
private final Map<String, Drawable> drawableMap;
public DrawableManager() {
drawableMap = new HashMap<String, Drawable>();
}
public Drawable fetchDrawable(String urlString) {
if (drawableMap.containsKey(u...
How can jQuery deferred be used?
... return promise;
};
// Default cache key generator (works with Booleans, Strings, Numbers and Dates)
// You will need to create your own key generator if you work with Arrays etc.
ResultsCache.prototype._cacheKeyGenerator = function(args) {
return Array.prototype.slice.call(arguments).join("|"...
What's the u prefix in a Python string?
...
You're right, see 3.1.3. Unicode Strings.
It's been the syntax since Python 2.0.
Python 3 made them redundant, as the default string type is Unicode. Versions 3.0 through 3.2 removed them, but they were re-added in 3.3+ for compatibility with Python 2 to ...
Differences between Java 8 Date Time API (java.time) and Joda-Time
...er to use getDayOfYear() instead of get(DAY_OF_YEAR). This causes a lot of extra methods compared with java.util.Calendar (although latter is not type-safe at all due to excessive use of ints).
Performance
See the other answer by @OO7 pointing to the analysis of Mikhail Vorontsov although point 3 ...
Difference between $.ajax() and $.get() and $.load()
... is supplied (see: http://api.jquery.com/load/)
data Type: PlainObject or String A plain object or string that is sent to the server with the request.
Request Method The POST method is used if data is provided as an
object; otherwise, GET is assumed.
Example: pass arrays of data to the server (POS...
Behaviour of increment and decrement operators in Python
...t I presume that you wouldn't expect a hypothetical ++ operator to work on strings.)
++count
Parses as
+(+count)
Which translates to
count
You have to use the slightly longer += operator to do what you want to do:
count += 1
I suspect the ++ and -- operators were left out for consistency...
Reusable library to get human readable version of file size?
...**exponent
unit, num_decimals = unit_list[exponent]
format_string = '{:.%sf} {}' % (num_decimals)
return format_string.format(quotient, unit)
if num == 0:
return '0 bytes'
if num == 1:
return '1 byte'
To make it more clear what is going on, we can om...
Custom exception type
...ailto:sysadmin@acme-widgets.com\">system administrator</a>.",
toString: function(){return this.name + ": " + this.message;}
};
share
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Can I use assert on Android devices?
...e the method is defined as:
public static void _assert(boolean condition, String message) {
if (!condition) {
throw new AssertionError(message);
}
}
The Oracle java docs recommend throwing an AssertionError as an acceptable alternative.
I guess you can configure Proguard to strip...
Update relationships when saving changes of EF4 POCO objects
...e property "ReportRoles". The new roles are passed in by a comma separated string from an Ajax call.
The first line will remove all the child entities, and if I used "report.ReportRoles.Remove(f)" instead of the "db.ReportRoles.Remove(f)" I would get the error.
report.ReportRoles.ToList.ForEach(Fu...