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What is a segmentation fault?
...ng to a read-only portion of the memory, etc. Segmentation fault is essentially the same in most languages that let you mess with the memory management, there is no principial difference between segfaults in C and C++.
There are many ways to get a segfault, at least in the lower-level languages suc...
Convert to/from DateTime and Time in Ruby
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Unfortunately this only really works when dealing with local times. If you start with a DateTime or Time with a different timezone, the parse function will convert into local timezone. You basically lose the original timezone.
– ...
How to send objects through bundle
...d on interpretations of what that data means or points to. You can't literally pass an object, but what you can do is one of three things:
1) You can break the object down to its constitute data, and if what's on the other end has knowledge of the same sort of object, it can assemble a clone from ...
What does “./” (dot slash) refer to in terms of an HTML file path location?
...e main part of the question then is: "Why to use it and is it necessary at all?". The only reason to prefer the syntax of "./file" instead of "file" I was able to find is that ./ means current folder and ONLY the current folder. So if there is some kind of tool/compiler/etc that searches for the fil...
What are “res” and “req” parameters in Express functions?
...red
request.method, which will be "GET" in this case, hence the app.get() call.
An array of HTTP headers in request.headers, containing items like request.headers.accept, which you can use to determine what kind of browser made the request, what sort of responses it can handle, whether or not it's a...
Linking to other Wiki pages on GitHub? [closed]
GitHub wikis allow you to link to other pages in the wiki like so:
4 Answers
4
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How can I create Min stl priority_queue?
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Actually, your right, 5) does work, it's just weird, I've never seen < overloaded like that, it's better to overload > and use greater<people>
– Rockstar5645
Feb 27 '18 at 7:23
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Getting and removing the first character of a string
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x <- 'hello stackoverflow'
substring(x, 2, nchar(x))
Idea is select all characters starting from 2 to number of characters in x. This is important when you have unequal number of characters in word or phrase.
Selecting the first letter is trivial as previous answers:
substring(x,1,1)
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How to remove the underline for anchors(links)?
... If color: black !important; would be added for body, will that also set all elements, including anchors, visited anchors, hovered anchors to be always black?
– Ωmega
Dec 10 '13 at 18:14
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What is the most efficient way to create a dictionary of two pandas Dataframe columns?
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I found a faster way to solve the problem, at least on realistically large datasets using:
df.set_index(KEY).to_dict()[VALUE]
Proof on 50,000 rows:
df = pd.DataFrame(np.random.randint(32, 120, 100000).reshape(50000,2),columns=list('AB'))
df['A'] = df['A'].apply(chr)
%timeit dict(zip(df...