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Exposing a port on a live Docker container
I'm trying to create a Docker container that acts like a full-on virtual machine. I know I can use the EXPOSE instruction inside a Dockerfile to expose a port, and I can use the -p flag with docker run to assign ports, but once a container is actually running, is there a command to open/map addi...
Speed up the loop operation in R
I have a big performance problem in R. I wrote a function that iterates over a data.frame object. It simply adds a new column to a data.frame and accumulates something. (simple operation). The data.frame has roughly 850K rows. My PC is still working (about 10h now) and I have no idea about the...
Textarea that can do syntax highlighting on the fly?
I am storing a number of HTML blocks inside a CMS for reasons of easier maintenance. They are represented by <textarea> s.
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Servlet returns “HTTP Status 404 The requested resource (/servlet) is not available”
I have an HTML form in a JSP file in my WebContent/jsps folder. I have a servlet class servlet.java in my default package in src folder. In my web.xml it is mapped as /servlet .
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What REALLY happens when you don't free after malloc?
This has been something that has bothered me for ages now.
17 Answers
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In Python, how do I convert all of the items in a list to floats?
I have a script which reads a text file, pulls decimal numbers out of it as strings and places them into a list.
12 Answers...
Why does Twitter Bootstrap Use Pixels for Font Size?
Given that Twitter Bootstrap is designed to be responsive / device-friendly, why doesn't it use relative font sizes?
5 Answ...
How do I add multiple arguments to my custom template filter in a django template?
I looked into django's docs and book but only found example using a single argument... is it even possible?
9 Answers
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“unrecognized selector sent to instance” error in Objective-C
I created a button and added an action for it, but as soon as it invoked, I got this error:
38 Answers
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Hide html horizontal but not vertical scrollbar
I have an HTML textarea that is of fixed width, but variable height. I would like to set overflow:scroll and be able to show a vertical scrollbar, but not a horizontal one. I am not able to use overflow:auto due to other things specific to my situation.
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