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Rails: Default sort order for a rails model?
...he block is evaluated at runtime. If you don't use a block you'll get this error:
Support for calling #default_scope without a block is removed. For example instead of default_scope where(color: 'red'), please use default_scope { where(color: 'red') }. (Alternatively you can just redefine self.d...
When to wrap quotes around a shell variable?
...ll silently copy source1 over source2 instead of giving you an appropriate error for the blank destination (as it would have if you had quoted each argument).
– Derek Veit
Jan 24 '18 at 16:22
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What data is stored in Ephemeral Storage of Amazon EC2 instance?
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Actually, I just went ahead and did this but there was an error anyway: Unable to connect to your database server using the provided settings. Filename: core/Loader.php Line Number: 346 Any ideas? This wasn't happening prior to doing this.
– James
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Null vs. False vs. 0 in PHP
...ng on and how to check if the returned value is what is wanted or did some error occur while processing. The same actually goes for function params, you can process them differently depending on if they are arrays or strings or what not, and this technique is used throughout PHP heavily too, so ever...
How do I validate a date string format in python?
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datetime.datetime.strptime(date_text, '%Y-%m-%d')
except ValueError:
raise ValueError("Incorrect data format, should be YYYY-MM-DD")
>>> validate('2003-12-23')
>>> validate('2003-12-32')
Traceback (most recent call last):
File "<pyshell#20>", line 1,...
Redis key naming conventions?
... Redis? A Node.js related example:
redis.get(key, function reply_callback(error, toystring) {
var toy = JSON.parse(toystring);
...
}
No need to convert slashes to colons and vice versa. Convenient, don't you think?
Note: always ensure that user is able to access only things you intended....
How to remove all debug logging calls before building the release version of an Android app?
...during development and, in production, no debug statements are logged, but errors are silently reported to Crashlytics.
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Synchronization vs Lock
...ier to program with monitor locks, and helps avoid many common programming errors involving locks, there are occasions where you need to work with locks in a more flexible way. For example, **some algorithms* for traversing concurrently accessed data structures require the use of "hand-over-hand" or...
How to select different app.config for several build configurations
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It doesn't work : .csproj can't be opened, error message "elements outside Target elements must have : Include, Update or Remove"
– Elo
May 9 '19 at 9:39
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Android ACTION_IMAGE_CAPTURE Intent
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can we use simple timestamps ?? or can the also make some errors ?? pleas do tag me when replied :)
– Rakeeb Rajbhandari
Nov 29 '13 at 8:06
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