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When and how should I use a ThreadLocal variable?
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One possible (and common) use is when you have some object that is not thread-safe, but you want to avoid synchronizing access to that object (I'm looking at you, SimpleDateFormat). Instead, give each thread its own instance...
How to determine programmatically whether a particular process is 32-bit or 64-bit
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One of the more interesting ways I've seen is this:
if (IntPtr.Size == 4)
{
// 32-bit
}
else if (IntPtr.Size == 8)
{
// 64-bit
}
else
{
// The future is now!
}
To find out if OTHER processes are running in the ...
Gulp command not found after install
...ackOverflow doesn't show this as the first answer! Clearly its the correct one.
– Anand Sainath
Apr 18 '18 at 2:05
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show 2 more comments
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What is fastest children() or find() in jQuery?
To select a child node in jQuery one can use children() but also find().
6 Answers
6
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How to correctly use “section” tag in HTML5?
...like there's been a lot of confusion about this element's purpose, but the one thing that's agreed upon is that it is not a generic wrapper, like <div> is. It should be used for semantic purposes, and not a CSS or JavaScript hook (although it certainly can be styled or "scripted").
A better e...
Should I declare Jackson's ObjectMapper as a static field?
...impleDateFormat is not thread safe, thus ObjectMapper won't be unless it clones e.g. SerializationConfig before each writeValue() (I doubt). Could you debunk my fear?
– dma_k
Aug 2 '13 at 12:09
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Why is a C++ Vector called a Vector?
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@Joseph Garvin: Vectors don't even need to have components that are numbers. For example, certain sets of functions can be used to form vector spaces where the components are functions.
– jason
Sep 15 '09 at 20:56
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Trying to add adb to PATH variable OSX
...e reason adb does not want to be found. This is very frustrating. Has anyone else had this problem before?
14 Answers
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How to draw vertical lines on a given plot in matplotlib?
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If someone wants to add a legend and/or colors to some vertical lines, then use this:
import matplotlib.pyplot as plt
# x coordinates for the lines
xcoords = [0.1, 0.3, 0.5]
# colors for the lines
colors = ['r','k','b']
for xc,...
Checkout subdirectories in Git?
... in both directories at once and the edits belong together, they should be one repository. If not, then don’t glom them together.
Git really really wants you to use separate repositories for separate entities.
submodules
Submodules do not address the desire to keep both directories in one r...