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How to listen for changes to a MongoDB collection?
...goDB as the data store. How can I "listen" for inserts to a MongoDB collection before spawning workers to process the job? Do I need to poll every few seconds to see if there are any changes from last time, or is there a way my script can wait for inserts to occur? This is a PHP project that I am wo...
What does the “Just” syntax mean in Haskell?
I have scoured the internet for an actual explanation of what this keyword does. Every Haskell tutorial that I have looked at just starts using it randomly and never explains what it does (and I've looked at many).
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Large-scale design in Haskell? [closed]
What is a good way to design/structure large functional programs, especially in Haskell?
8 Answers
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Python xml ElementTree from a string source?
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Same problem as @SamuelLampa mentioned. I is not a ElementTree, I am not able to do getroot() for this
– Siddharth Menon
Aug 21 '13 at 9:30
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Media query to detect if device is touchscreen
...hscreen device? If there is no way, do you suggest using a JavaScript solution such as !window.Touch or Modernizr?
10 Ans...
CSS Font Border?
...r possible trick would be to use four shadows, one pixel each on all directions, using property text-shadow:
h1 {
/* 1 pixel black shadow to left, top, right and bottom */
text-shadow: -1px 0 black, 0 1px black, 1px 0 black, 0 -1px black;
font-family: sans; color: yellow;
}
&...
Programmatically generate video or animated GIF in Python?
... that I want to create a video from. Ideally I could specify a frame duration for each frame but a fixed frame rate would be fine too. I'm doing this in wxPython, so I can render to a wxDC or I can save the images to files, like PNG. Is there a Python library that will allow me to create either a...
How can I make a multipart/form-data POST request using Java?
In the days of version 3.x of Apache Commons HttpClient, making a multipart/form-data POST request was possible ( an example from 2004 ). Unfortunately this is no longer possible in version 4.0 of HttpClient .
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NSLog with CGPoint data
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Since StackOverflow saw fit to reintroduce this question in my RSS feed, I may as well pimp my general solution: jens.ayton.se/blag/almost-elegant-cave-man-debugging which allows you to go JA_DUMP(point); and get “point = { 43, 96 }” logged without having to worry about for...
Why doesn't ruby support method overloading?
...thod overloading using the first way because there is no data type declaration in ruby(dynamic typed language). So the only way to define the above method is def(a,b)
With the second option, it might look like we can achieve method overloading, but we can't. Let say I have two methods with differen...