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SQL - many-to-many table primary key
...er. The surrogate is a waste of space.
You won't need indexes on the individual columns since the table should only ever be used to join the two referenced tables together.
That comment you refer to in the question is not worth the electrons it uses, in my opinion. It sounds like the author thinks...
Getting Checkbox Value in ASP.NET MVC 4
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@Html.EditorFor(x => x.Remember)
Will generate:
<input id="Remember" type="checkbox" value="true" name="Remember" />
<input type="hidden" value="false" name="Remember" />
How does it work:
If checkbox remains unchecked, the form submits only the hidden value (false)
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AngularJS ng-style with a conditional expression
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As @Yoshi said, from angular 1.1.5 you can use-it without any change.
If you use angular < 1.1.5, you can use ng-class.
.largeWidth {
width: 100%;
}
.smallWidth {
width: 0%;
}
// [...]
ng-class="{largeWidth: myVar == 'ok'...
How to query MongoDB with “like”?
...er to this link
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions
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Mongodb Explain for Aggregation framework
...rations
explain:true
db.collection.aggregate([
{ $project : { "Tags._id" : 1 }},
{ $unwind : "$Tags" },
{ $match: {$or: [{"Tags._id":"tag1"},{"Tags._id":"tag2"}]}},
{ $group: {
_id : "$_id",
count: { $sum:1 }
}},
{$sort: {"count":-1}}
],
{
explain:...
How can I build multiple submit buttons django form?
... method to access the POST data before validation. It should contain a key called newsletter_sub or newsletter_unsub depending on which button was pressed.
# in the context of a django.forms form
def clean(self):
if 'newsletter_sub' in self.data:
# do subscribe
elif 'newsletter_uns...
Location of parenthesis for auto-executing anonymous JavaScript functions?
...t some of the more outre ones (-function(){}();, !function(){}();, and basically any other operator just before function also work, but I'd stick to versions using parens). I see the first a lot more than I see the second, and it's my preference; it makes more sense to me as well, but that's subject...
What does ON [PRIMARY] mean?
...aint in terms of storage? It sounds irrelevant or redundant to me. Syntactically, it should have been sufficient to mention it once at the table level or is it really possible to store the table on PRIMARY file group and table constraint data on NON-PRIMARY file group?
– RBT
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How to stage only part of a new file with git?
...tions include git gui. In Debian, for example, it is in a separate package called 'git-gui'.
– cristoper
Jul 1 '14 at 18:16
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How can I filter lines on load in Pandas read_csv function?
...rows in df (assuming df is any DataFrame, such as the result of a read_csv call, that at least contains a datetime column timestamp) for which the values in the timestamp column are greater than the value of targettime. Similar question.
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