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Auto layout constraints issue on iOS7 in UITableViewCell
I'm using auto layout constraints programmatically to layout my custom UITableView cells and I'm correctly defining the cell sizes in tableView:heightForRowAtIndexPath:
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How do I check if an array includes a value in JavaScript?
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Also relevant, the ES7 compatibility table (looks like chrome supports it now)
– styfle
Mar 11 '16 at 20:25
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EF Code First foreign key without navigation property
...public override void Up()
{
// other stuff...
AddForeignKey("ChildTableName", "ParentId", "ParentTableName", "Id",
cascadeDelete: true); // or false
CreateIndex("ChildTableName", "ParentId"); // if you want an index
}
Running this migration (update-database on package manage c...
Does a UNIQUE constraint automatically create an INDEX on the field(s)?
...ally run into them.
As for testing index usage you should first fill your table with some data to make optimizer think it's actually worth to use that index.
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What does the KEY keyword mean?
In this MySQL table definition:
2 Answers
2
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How do you run a SQL Server query from PowerShell?
...dapter.Fill($dataSet) | Out-Null
$connection.Close()
$dataSet.Tables
}
I have been using this so long I don't know who wrote which parts. This was distilled from others' examples, but simplified to be clear and just what is needed without extra dependencies or features.
I use and shar...
How to change the type of a field?
...big deal no matter how you do it. If you were using SQL and this was a big table you would probably have to take some down time.
– Gates VP
Jun 28 '16 at 18:16
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How to read data when some numbers contain commas as thousand separator?
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You can have read.table or read.csv do this conversion for you semi-automatically. First create a new class definition, then create a conversion function and set it as an "as" method using the setAs function like so:
setClass("num.with.commas...
Comparing two dataframes and getting the differences
... behaviour for pd.concat(), here's the docs pandas.pydata.org/pandas-docs/stable/merging.html
– Thanos
Apr 17 '16 at 18:35
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Tactics for using PHP in a high-load site
...lize your schemas. This means that rather than to have multiple relational tables, you should instead opt to have one big table. In general, joins are a waste of precious DB resources because doing multiple prepares and collation burns disk I/O's. Avoid them when you can.
The trade-off here is ...