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differentiate null=True, blank=True in django
...he DB.
blank determines whether the field will be required in forms. This includes the admin and your custom forms. If blank=True then the field will not be required, whereas if it's False the field cannot be blank.
The combo of the two is so frequent because typically if you're going to allow a f...
“Active Directory Users and Computers” MMC snap-in for Windows 7?
...ation Tools (RSAT) - the Active Directory Users & Computers Snap-In is included in that pack. Download link: Remote Server Administration Tools for Windows 7.
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How do I move a redis database from one server to another?
...e as my new redis server. If it were MySQL, I would export the DB from the old server and import it into the new server. How should I do this with redis?
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Ruby arrays: %w vs %W
...l Delimited Input types, that relate to Arrays. There are other types that include %q, %Q, %r, %x and %i.
The difference between upper and lower case is that it gives us access to the features of single and double quote. With single quotes and lowercase %w, we have no code interpolation (e.g. #{som...
How do I make CMake output into a 'bin' dir?
...generator/toolchain you are using (for example Visual Studio project files include all configurations in one build tree, whilst the makefile generator will only generate makefiles for one build configuration).
– Adam Bowen
May 23 '15 at 22:49
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Restoring state of TextView after screen rotation?
.../>
From documentation on freezesText :
If set, the text view will include its current complete text inside of its frozen icicle in addition to meta-data such as the current cursor position. By default this is disabled; it can be useful when the contents of a text view is not stored in a per...
How to perform Unwind segue programmatically?
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First of all, the method for unwinding must be included inside the UIViewController. Then your solution will work
– Alex Cio
Oct 16 '14 at 15:36
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Why should we typedef a struct so often in C?
...h a definition, not using typedefs, it is possible for a compiland unit to include foo.h to get at the FOO_DEF definition. If it doesn't attempt to dereference the 'bar' member of the foo struct then there will be no need to include the "bar.h" file.
Also, since the namespaces are different betwe...
Should I use tag for icons instead of ? [closed]
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To save 100 bytes they would have to include 16 icons and not enable compression.
– Quentin
Jun 21 '12 at 9:41
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