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Assignment in an if statement
...ill be in C# 6.0. This feature is called "declaration expressions". See
https://roslyn.codeplex.com/discussions/565640
for details.
The proposed syntax is:
if ((var i = o as int?) != null) { … i … }
else if ((var s = o as string) != null) { … s … }
else if ...
More generally, the pro...
@synthesize vs @dynamic, what are the differences?
...
As per the documentation:
https://developer.apple.com/library/mac/documentation/cocoa/conceptual/ObjCRuntimeGuide/Articles/ocrtDynamicResolution.html
@dynamic tells the compiler that the accessor methods are provided at runtime.
With a little bit of...
How to unset a JavaScript variable?
...ions to delete as with any language, if you care enough you should read:
https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Operators/Special_Operators/delete_Operator
http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-262.pdf
...
Build Eclipse Java Project from Command Line
...everal years ago eclipse replaced startup.jar with the "equinox launcher"
https://wiki.eclipse.org/Equinox_Launcher
On Eclipse Mars (MacOX):
java -jar /Applications/Eclipse.app/Contents/Eclipse/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -noSplash -data "workspace" -applicatio...
Dynamically adding a form to a Django formset with Ajax
...o dynamic django forms:
http://code.google.com/p/django-dynamic-formset/
https://github.com/javisantana/django-dinamyc-form/tree/master/frm
They both make use of jQuery and are django-specific. The first seems a bit more polished and offers a download that comes w/demos which are excellent.
...
How to initialize log4j properly?
...gure(file/location/log4j.properties)
More information is available here: https://logging.apache.org/log4j/1.2/manual.html
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What are best practices for using SmtpClient, SendAsync and Dispose under .NET 4.0
...eUploader: {
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Image library for Python 3
... with OpenCV and numpy to load, save and manipulate images. Have a look at https://github.com/bunkahle/PILasOPENCV or install it with pip install PILasOPENCV. Not all PIL functions have been simulated but the most common functions work.
...
How do I rename a column in a SQLite database table?
...ME COLUMN fails with an error and no changes are applied.
Image source: https://www.sqlite.org/images/syntax/alter-table-stmt.gif
Example:
CREATE TABLE tab AS SELECT 1 AS c;
SELECT * FROM tab;
ALTER TABLE tab RENAME COLUMN c to c_new;
SELECT * FROM tab;
db-fiddle.com demo
Android Suppor...
Django filter queryset __in for *every* item in list
...eUploader: {
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