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Default string initialization: NULL or Empty? [closed]
...initialized my strings to NULL, with the thinking that NULL means the absence of a value and "" or String.Empty is a valid value. I have seen more examples lately of code where String.Empty is considered the default value or represents no value. This strikes me as odd, with the newly added nullabl...
Assign variable in if condition statement, good practice or not? [closed]
I moved one years ago from classic OO languages such like Java to JavaScript. The following code is definitely not recommended (or even not correct) in Java:
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How to install pip with Python 3?
... install pip . It should support Python 3, but it requires setuptools, which is available only for Python 2.
21 Answers
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What is an existential type?
I read through the Wikipedia article Existential types . I gathered that they're called existential types because of the existential operator (∃). I'm not sure what the point of it is, though. What's the difference between
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Copy a table from one database to another in Postgres
I am trying to copy an entire table from one database to another in Postgres. Any suggestions?
19 Answers
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How do I redirect in expressjs while passing some context?
I am using express to make a web app in node.js. This is a simplification of what I have:
8 Answers
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Hiding a password in a python script (insecure obfuscation only)
I have got a python script which is creating an ODBC connection. The ODBC connection is generated with a connection string. In this connection string I have to include the username and password for this connection.
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Error to use a section registered as allowDefinition='MachineToApplication' beyond application level
The top line in all of my aspx pages in my /portal/ directory has this error message, and I know it's a common one. I have googled this error message to no end, and I see a lot of posts telling me to configure the /portal/ folder as an application in IIS (which I have), and more posts telling me I ...
What is meant by 'first class object'?
In a recent question , I received suggestions to talk on, amongst other things, the aspect of JavaScript where functions are 'first class' objects. What does the 'first class' mean in this context, as opposed to other objects?
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What's the difference between SCSS and Sass?
From what I've been reading, Sass is a language that makes CSS more powerful with variable and math support.
13 Answers
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