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Why can't I use a list as a dict key in python?
... a much bigger deal out of their object identity anyway (when was the last time you had two distinct module objects called sys?), and are compared by that anyway. Therefore, it's less surprising - or even expected - that they, when used as dict keys, compare by identity in that case as well.
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Bash function to find newest file matching pattern
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The ls command has a parameter -t to sort by time. You can then grab the first (newest) with head -1.
ls -t b2* | head -1
But beware: Why you shouldn't parse the output of ls
My personal opinion: parsing ls is only dangerous when the filenames can contain funny char...
How can I do string interpolation in JavaScript?
...ter, requiring it to be hit twice to write (and writes two of them at this time). This is because some characters interact with them, such as "e". If I try to write "ello" with them, I get èllo``. It is also somewhat annoyingly located (shift+forwardtick, which is another such special lookahead cha...
Correct idiom for managing multiple chained resources in try-with-resources block?
...on the decorated object not be called. Whilst that has been fixed for some time, expect it from other implementations.
2)
try (
FileWriter fw = new FileWriter(file);
BufferedWriter bw = new BufferedWriter(fw)
) {
bw.write(text);
}
We're still flushing in the implicit finally block (n...
Android Emulator: Installation error: INSTALL_FAILED_VERSION_DOWNGRADE
...n install the fresh one .
You could simply increase the number by one each time a new version is released.
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SQL WHERE.. IN clause multiple columns
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Wrong, this delivers the row multiple times, assuming the joined table be can be joined several times... otherwise, do an inner join and you can spare yourself the where.
– Stefan Steiger
Nov 20 '19 at 15:03
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What's the difference between %s and %d in Python string formatting?
...'Hi Alice I have 42 donuts'
This could be achieved with a "+" most of the time. To gain a deeper understanding to your question, you may want to check {} / .format() as well. Here is one example: Python string formatting: % vs. .format
also see here a google python tutorial video @ 40', it has som...
Outline effect to text
... called text-stroke in CSS3, I've been trying to get this to work for some time but have been unsuccessful so far.
What I have done instead is used the already supported text-shadow property (supported in Chrome, Firefox, Opera, and IE 9 I believe).
Use four shadows to simulate a stroked text:
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How to extract the first two characters of a string in shell scripting?
...method is usually better if you're going to be doing it a lot (like 50,000 times per report as you mention) since there's no process creation overhead. All solutions which use external programs will suffer from that overhead.
If you also wanted to ensure a minimum length, you could pad it out befor...
Please explain some of Paul Graham's points on Lisp
... arguably does not fully satisfy the fourth point on your list, since read-time is not really open to user code; I will discuss what it would mean for this to be otherwise, though.
So, suppose we've got this code in a file somewhere and we ask Clojure to execute it. Also, let's assume (for the sake ...