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How can you diff two pipelines in Bash?
...int out is that, in all of the answer's examples, the diffs won't actually start until both streams have finished. Test this with e.g.:
comm -23 <(seq 100 | sort) <(seq 10 20 && sleep 5 && seq 20 30 | sort)
If this is an issue, you could try sd (stream diff), which doesn't ...
Is an array name a pointer?
...ferencing operator in C, [ ], is defined in terms of pointers. x[y] means: start with the pointer x, step y elements forward after what the pointer points to, and then take whatever is there. Using pointer arithmetic syntax, x[y] can also be written as *(x+y).
For this to work with a normal array, ...
Using tags in the with other HTML
...lt;head>), I'll keep using this browser-supported capability, unless it starts breaking.
– ToolmakerSteve
Jul 16 at 20:18
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Syntax behind sorted(key=lambda: …)
...selves are not sorted. Why is this?? Lets read the docs:
Key Functions Starting with Python 2.4, both list.sort() and sorted() added a key parameter to specify a function to be called on
each list element prior to making comparisons.
We have to do a little bit of reading between the lines he...
How to match all occurrences of a regex
...ssion matching enumerator with named capture support"
"How to find out the starting point for each match in ruby"
Reading about special variables $&, $', $1, $2 in Ruby will be helpful too.
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First-time database design: am I overengineering? [closed]
...able hardware.
That said, and this relates to your question 3, with the start you have you probably shouldn't really be overly worried about performance or hyper-sensitivity to normalization orthodoxy here. This is a reporting server you are building, not a transaction based application backend,...
When serving JavaScript files, is it better to use the application/javascript or application/x-javas
...r to be strictly standard's compliant.
But until people viewing my website start complaining that "ever since upgrading my browser, about 50% of your website disappeared", I have no motive to change the code in my website.
s...
What blocks Ruby, Python to get Javascript V8 speed? [closed]
... where optimizations could be used (and Unladen Swallow, a Google project, started to implement these before biting the dust). Here are some of the optimizations that they planned. I could see Python gaining V8 speed in the future if a JIT a la PyPy gets implemented for CPython, but that does not se...
What's the fastest way to loop through an array in JavaScript?
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You have to be careful using this loop. I started using it and had a hard to track bug because of one mistake I made. If you nest two loops like this: jsfiddle.net/KQwmL/1. You have to be careful to name the var len differently in the two loops, otherwise the second ...
Can a Windows batch file determine its own file name?
...g code.
set b=%~0
echo %~n0%b:~8,4%
I have learned that ":~8,4%" means start at the 9th character of the variable and then show show the next 4 characters. The range is 0 to the end of the variable string. So %Path% would be very long!
fIlEnAmE.bat
012345678901
However, this is not as sound a...