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Number of elements in a javascript object
...the number of elements in a javascript object?? (i.e. constant-time complexity).
6 Answers
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How to redirect 404 errors to a page in ExpressJS?
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I found this example quite helpful:
https://github.com/visionmedia/express/blob/master/examples/error-pages/index.js
So it is actually this part:
// "app.router" positions our routes
// above the middleware defined below,
// this means that Expr...
How to test code dependent on environment variables using JUnit?
...ode depends on the value of this variable. I would like to test this code with different values of the environment variable. How can I do this in JUnit?
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How do I parallelize a simple Python loop?
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edited Jun 17 '15 at 17:14
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How do I execute inserts and updates in an Alembic upgrade script?
...arative (as opposed to class-Mapper-Table or core) to define your models. It should be relatively straightforward to adapt this to the other forms.
Note that Alembic provides some basic data functions: op.bulk_insert() and op.execute(). If the operations are fairly minimal, use those. If the migr...
Convert a row of a data frame to vector
...ract a single row from a data frame you get a one-row data frame. Convert it to a numeric vector:
as.numeric(df[1,])
As @Roland suggests, unlist(df[1,]) will convert the one-row data frame to a numeric vector without dropping the names. Therefore unname(unlist(df[1,])) is another, slightly m...
How to call a stored procedure from Java and JPA
I am writing a simple web application to call a stored procedure and retrieve some data.
Its a very simple application, which interacts with client's database. We pass employee id and company id and the stored procedure will return employee details.
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Check orientation on Android phone
How can I check if the Android phone is in Landscape or Portrait?
23 Answers
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How to convert An NSInteger to an int?
...42;
int myInt = (int) myInteger;
NSInteger is nothing more than a 32/64 bit int. (it will use the appropriate size based on what OS/platform you're running)
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Some built-in to pad a list in python
I have a list of size < N and I want to pad it up to the size N with a value.
10 Answers
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