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Django dynamic model fields
...itself, which requires manually merging the data from a column format to a set of key-value pairs in the model.
Harder to maintain. Maintaining data integrity requires a multi-column unique key constraint, which may be inefficient on some databases.
You will need to select one of the forks, since t...
Image Greyscale with CSS & re-color on mouse-over?
...o be linked to other website tho, how could this be done if the images are set as backgrounds?
– Meta
Sep 1 '11 at 17:39
1
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How does having a dynamic variable affect performance?
...dynamic of course losing: public class ONE<T>{public object i { get; set; }public ONE(){i = typeof(T).ToString();}public object make(int ix){ if (ix == 0) return i;ONE<ONE<T>> x = new ONE<ONE<T>>();/*dynamic x = new ONE<ONE<T>>();*/return x.make(i...
How to build jars from IntelliJ properly?
...8/quickly-create-jar-artifact/
File -> Project Structure -> Project Settings -> Artifacts -> Click green plus sign -> Jar -> From modules with dependencies...
The above sets the "skeleton" to where the jar will be saved to. To actually build and save it do the following:
Extrac...
A regular expression to exclude a word/string
... answered Jan 16 '10 at 21:21
SethSeth
38.3k99 gold badges7979 silver badges117117 bronze badges
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What is difference between instantiating an object using new vs. without
...w() or Time::operator new(), and subsequently calls Time::Time() with this set to an address within that memory block (and also returned as the result of new), which is then stored in t. As you know, this is generally done on the heap (by default) and requires that you delete it later in the program...
Is it sometimes bad to use ?
...
I will generally always set appropriate margins and padding on elements using CSS - it's a lot less messy than loads of <br />s all over the place apart from being more semantically correct.
Probably the only time I would use a <br /> i...
HTML5 Email Validation
...sses validations
$("input[type=email]").change( function(){
// Set the regular expression to validate the email
validation = new RegExp(validations['email'][0]);
// validate the email value against the regular expression
if (!validation.test(this.value)){
...
How to execute mongo commands through shell scripts?
...vironment variable:
mongo --eval 'db.mycollection.update({"name":"foo"},{$set:{"this":"that"}});' myDbName
Otherwise you may see something like this:
mongo --eval "db.test.update({\"name\":\"foo\"},{$set:{\"this\":\"that\"}});"
> E QUERY SyntaxError: Unexpected token :
...
How to Store Historical Data
...the audit logs is a problem you can put the audit log tables on a separate set of disks.
– ConcernedOfTunbridgeWells
Oct 6 '10 at 15:59
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