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How do I check if an index exists on a table field in MySQL?
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Try:
SELECT * FROM information_schema.statistics
WHERE table_schema = [DATABASE NAME]
AND table_name = [TABLE NAME] AND column_name = [COLUMN NAME]
It will tell you if there is an index of any kind on a certain column without the need t...
Why is there an “Authorization Code” flow in OAuth2 when “Implicit” flow works so well?
...ave the following properties:
They are not part of the HTTP request therefore they can't be read by servers and because of that they cannot be intercepted by intermediary servers/routers (this is important).
They only exist on the browser - client side - so the only way to read the hash fragment i...
Copying data from one SQLite database to another
... Y using the ATTACH command, then run the appropriate Insert Into commands for the tables you want to transfer.
INSERT INTO X.TABLE SELECT * FROM Y.TABLE;
Or, if the columns are not matched up in order:
INSERT INTO X.TABLE(fieldname1, fieldname2) SELECT fieldname1, fieldname2 FROM Y.TABLE;
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How to create a SQL Server function to “join” multiple rows from a subquery into a single delimited
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If you're using SQL Server 2005, you could use the FOR XML PATH command.
SELECT [VehicleID]
, [Name]
, (STUFF((SELECT CAST(', ' + [City] AS VARCHAR(MAX))
FROM [Location]
WHERE (VehicleID = Vehicle.VehicleID)
FOR XML PATH ('')), 1, 2, '...
iFrame src change event detection?
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Correction: this.contentWindow.location is available for other domains. Even this.contentWindow.location.href is available for other domains, but only for writing. However reading this.contentWindow.location.href is limited to the same domain.
– wadim
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What is the documents directory (NSDocumentDirectory)?
...ans that it can only access files and directories within its own contents. For example Documents and Library.
See the iOS Application Programming Guide.
To access the Documents directory of your applications sandbox, you can use the following:
iOS 8 and newer, this is the recommended method
+ (N...
Easiest way to copy a single file from host to Vagrant guest?
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Since you ask for the easiest way, I suggest using vagrant-scp. It adds a scp command to vagrant, so you can copy files to your VM like you would normally do with scp.
Install via:
vagrant plugin install vagrant-scp
Use it like so:
va...
How to create JSON string in C#
...ssume you would just use a stringbuilder to build the JSON string and them format your response as JSON?
14 Answers
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How do I scale a stubborn SVG embedded with the tag?
...x="0 0 {width} {height}"
Replace {width} and {height} with some defaults for the viewBox. I used the values from the "width" and "height" attributes of the SVG tag and it seemed to work.
Save the SVG and it should now scale as expected.
I found this information here:
https://blueprints.launchpa...
Presenting a UIAlertController properly on an iPad using iOS 8
...OS 8.0, Apple introduced UIAlertController to replace UIActionSheet . Unfortunately, Apple didn't add any information on how to present it. I found an entry about it on hayaGeek's blog, however, it doesn't seem to work on iPad. The view is totally misplaced:
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