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What is the use of the @ symbol in PHP?
...om two perspectives:
As a developer: When @ is used, I have absolutely no idea where to start. If there are hundreds or even thousands of function calls with @ the error could be like everyhwere. No reasonable debugging possible in this case. And even if it is just a 3rdparty error - then it's just...
jQuery: Can I call delay() between addClass() and such?
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@MattYao I don't think you get the idea. If you dont use setTimeout, then that delay wont work
– Alex Jolig
Feb 6 '19 at 4:32
1
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What is the purpose of Rank2Types?
... of that from you in the interest of simplicity.
But basically, the rough idea is that polymorphic types don't really have the a -> b form that they do in Haskell; in reality, they look like this, always with explicit quantifiers:
id :: ∀a.a → a
id = Λt.λx:t.x
If you don't know the "∀...
WhatsApp API (java/python) [closed]
...pecially when you have bankruptly failed twice, it's important to validate ideas and fail more faster.
Popular chat platforms like Messenger, Slack, Skype etc. have happily (in the sense officially) provided APIs for bots to interact with, but WhatsApp has not yet provided any API.
However, since ...
Using jQuery To Get Size of Viewport
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Any idea how to get the area that is visible on devices screen, not just what it can scroll to? I see $(window).height() returning the full width of the document, not the portion that is zoomed to. I want to know how much is visi...
Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
...)
pd.isnull(s)
Out[9]:
0 False
1 True
2 False
dtype: bool
The idea of using numpy.nan to represent missing values is something that pandas introduced, which is why pandas has the tools to deal with it.
Datetimes too (if you use pd.NaT you won't need to specify the dtype)
In [24]: s = ...
Eliminate space before \begin{itemize} [closed]
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It is never a bad idea to point at CTAN ( ctan.org ).
– dmckee --- ex-moderator kitten
Jun 30 '09 at 0:00
20
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Android dex gives a BufferOverflowException when building
...roject.properties and targetSdk. I am using the latest version of IntelliJ IDEA 13 Cardea. Fortunately, uninstalling build-tools 19.0.0 did fix the build.
– James Wald
Nov 22 '13 at 6:50
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Eclipse Optimize Imports to Include Static Imports
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Intellij Idea supports this out of the box. Shame eclipse doesn't.
– Neeraj
Feb 22 '18 at 9:27
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How to handle code when app is killed by swiping in android?
...wei device? It seems onTaskRemoved never gets called on those devices. Any ideas why?
– Alon Minski
Dec 1 '16 at 8:08
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