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Check if database exists in PostgreSQL using shell
I was wondering if anyone would be able to tell me about whether it is possible to use shell to check if a PostgreSQL database exists?
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Casperjs/PhantomJs vs Selenium
...re using Selenium to automate our UI testing. Recently we have seen majority of our users using Chrome. So we wanted to know - pros and cons of using PhantomJS vs Selenium:
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How can I render inline JavaScript with Jade / Pug?
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simply use a 'script' tag with a dot after.
script.
var users = !{JSON.stringify(users).replace(/<\//g, "<\\/")}
https://github.com/pugjs/pug/blob/master/examples/dynamicscript.pug
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Instance variables vs. class variables in Python
I have Python classes, of which I need only one instance at runtime, so it would be sufficient to have the attributes only once per class and not per instance. If there would be more than one instance (which won't happen), all instance should have the same configuration. I wonder which of the follow...
java.net.UnknownHostException: Invalid hostname for server: local
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What the exception is really saying is that there is no known server with the name "local". My guess is that you're trying to connect to your local computer. Try with the hostname "localhost" instead, or perhaps 127.0.0.1 or ::1 (the last one is IPv6).
From the javadocs:
Thrown to indicate...
How to play ringtone/alarm sound in Android
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You can simply play a setted ringtone with this:
Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
Ringtone r = RingtoneManager.getRingtone(getApplicationContext(), notification);
r.play();
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Spring MVC: How to perform validation?
...t org.springframework.validation.Validator . A question about that: I saw it validates a class. Does the class have to be filled manually with the values from the user input, and then passed to the validator?
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Div width 100% minus fixed amount of pixels
How can I achieve the following structure without using tables or JavaScript? The white borders represent edges of divs and aren't relevant to the question.
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INSERT statement conflicted with the FOREIGN KEY constraint - SQL Server
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In your table dbo.Sup_Item_Cat, it has a foreign key reference to another table. The way a FK works is it cannot have a value in that column that is not also in the primary key column of the referenced table.
If you have SQL Server Management Stu...
Displaying files (e.g. images) stored in Google Drive on a website
I was wondering if its possible to access/display files like images which are stored in Google Drive on a public website.
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