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Flask SQLAlchemy query, specify column names
How do I specify the column that I want in my query using a model (it selects all columns by default)? I know how to do this with the sqlalchmey session: session.query(self.col1) , but how do I do it with with models? I can't do SomeModel.query() . Is there a way?
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Where do I mark a lambda expression async?
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Retrieve version from maven pom.xml in code
...le as a resource from the classpath (google for copious examples of how to do this, but here's an example for starters).
In Maven, enable resource filtering. This will cause Maven to copy that file into your output classes and translate the resource during that copy, interpreting the property. You...
Setting variable to NULL after free
...ngling pointer is accessed after it is freed, you may read or overwrite random memory. If a null pointer is accessed, you get an immediate crash on most systems, telling you right away what the error is.
For local variables, it may be a little bit pointless if it is "obvious" that the pointer isn't...
How do I set the default font size in Vim?
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set guifont=Monospace:h20
My recommendation for setting the font is to do (if your version supports it)
set guifont=*
This will pop up a menu that allows you to select the font. After selecting the font, type
set guifont?
To show what the current guifont is set to. After that copy that lin...
What is the appropriate HTTP status code response for a general unsuccessful request (not an error)?
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You should use 400 for business rules. Don't return 2xx if the order was not accepted. HTTP is an application protocol, never forget that. If you return 2xx the client can assume the order was accepted, regardless of any information you send in the body.
From RES...
How to run Unix shell script from Java code?
...s is quite late and things might have changed but per current Java Process documentation this is not recommended method for shell scripts: docs.oracle.com/javase/8/docs/api/java/lang/Process.html "The methods that create processes may not work well for special processes on certain native platforms...
How to version control a record in a database
...t I have a record in the database and that both admin and normal users can do updates.
11 Answers
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How do I parse a string to a float or int?
... For more, see stackoverflow.com/q/21895756/931277
– dokkaebi
Aug 18 '17 at 21:44
20
why not simp...
SVN remains in conflict?
How do I get this directory out of conflict? I don't care if it's resolved using "theirs" or "mine" or whatever...
12 Answ...