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How to implement the activity stream in a social network
...at you can quickly grab a batch of activities by activity ID or by using a set of friend IDs with time constraints.
Publish the activity IDs to Redis whenever an activity record is created, adding the ID to an "activity stream" list for every user who is a friend/subscriber that should see the activ...
sed error: “invalid reference \1 on `s' command's RHS”
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How can I read large text files in Python, line by line, without loading it into memory?
I need to read a large file, line by line. Lets say that file has more than 5GB and I need to read each line, but obviously I do not want to use readlines() because it will create a very large list in the memory.
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Is it possible to style html5 audio tag?
I haven't found any resources on how to do that. Something as simple as changing the color of the player would be nice to have :)
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pandas: filter rows of DataFrame with operator chaining
... b". Note that the following are valid: df.query('a in list([1,2])'), s = set([1,2]); df.query('a in @s').
– user3780389
Nov 15 '16 at 16:14
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What is the Scala annotation to ensure a tail recursive function is optimized?
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Javascript - sort array based on another array
...ure and is always necessary (unless you can guarantee the size of the data set is going to be small). The difference in performance is (quite literally) expressed in orders of magnitude.
– Abion47
Feb 4 '19 at 20:26
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CSS image resize percentage of itself?
...the fourth step is that #img_wrap has the same dimensions as the image.
By setting width: 50% on img.normal, its size is 50% of #img_wrap, and therefore 50% of the original image size.
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How to make a Python script run like a service or daemon in Linux
...inux daemon that periodically launches scripts according to a schedule you set. You add your script into a crontab or place a symlink to it into a special directory and the daemon handles the job of launching it in the background. You can read more at Wikipedia. There is a variety of different cr...
Get last element of Stream/List in a one-liner
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