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Detect the Internet connection is offline?
...error-prone work of handling state.. wireless connections may come and go, etc. So your best bet may be to just fail gracefully, preserve the data, and alert the user.. allowing them to eventually fix the connection problem if there is one, and to continue using your app with a fair amount of forgi...
Is the LIKE operator case-sensitive with MSSQL Server?
...r that is case sensitive, it is the column itself.
When a SQL Server installation is performed a default collation is chosen to the instance. Unless explicitly mentioned otherwise (check the collate clause bellow) when a new database is created it inherits the collation from the instance and when ...
HTML minification? [closed]
...s much more likely that compression, cache management, image optimization, etc will make a bigger difference to the performance of your site overall. Those tools will show you what the biggest problems are -- if you've dealt with them all and still find that HTML minification makes a significant di...
Task not serializable: java.io.NotSerializableException when calling function outside closure only o
Getting strange behavior when calling function outside of a closure:
9 Answers
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django admin - add custom form fields that are not part of the model
... ModelForm class and then declare your extra fields inside that as you normally would. I've also given an example of how you might use these values in form.save():
from django import forms
from yourapp.models import YourModel
class YourModelForm(forms.ModelForm):
extra_field = forms.CharFiel...
How do I escape a percentage sign in T-SQL?
...percent symbol in other constructs such as a user function, concatenation, etc.
– Bron Davies
Nov 30 '12 at 18:49
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In .NET, which loop runs faster, 'for' or 'foreach'?
...foreach" as it adds code, another variable, a condition you need to check, etc. How many times have you seen an off-by-one error in a "foreach" loop?
– tster
Dec 3 '09 at 15:45
35...
How to do a less than or equal to filter in Django queryset?
I am attempting to filter users by a custom field in each users profile called profile. This field is called level and is an integer between 0-3.
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Conventions for exceptions or error codes
...tion can then contain code to check whether the file exists, or is locked, etc)
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Skip certain tables with mysqldump
...table=schema.table2 > db-data.sql
The resulting two files are structurally sound but the dumped data is now ~500MB rather than 9GB, much better for me. I can now import these two files into another database for testing purposes without having to worry about manipulating 9GB of data or running o...