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Best way to create custom config options for my Rails app?
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How do we read ENV variable in config.yml, my configuration is the same ..i have added variable in bashrc and im trying to read that in config.yml using key: <%= ENV[URL] %>... this is not working
– shiva
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Which is faster in Python: x**.5 or math.sqrt(x)?
... If not, then why go with code which is cryptic over code that is easy to read? The time difference is would be less than anybody could notice in just about any application I could forsee. I really don't mean to put down your question, but it seems that you're going a little too far with prematur...
How do you find all subclasses of a given class in Java?
... subclasses in what seems to be an "efficient" amount of time because it already has all of the type data loaded at the point where you press the "Display in Type Hierarchy" button (since it is constantly compiling your classes, knows about everything on the classpath, etc).
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Foreign Key naming scheme
...erby DB with very specific naming convention and this one here is the most readable and traceable. Thank you
– Anddo
Oct 12 '19 at 13:08
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Case conventions on element names?
...b -c"/>
outputs 0, as expected
But note how confusing the above is to read!
<a>1</a><a-b>3</a-b><b>2</b>
<xsl:value-of select="a-b"/>
outputs 3
<a>1</a><a-b>3</a-b><b>2</b>
<xsl:value-of select="a -b"/>
output...
URLWithString: returns nil
...This method parses URLString according to RFCs 1738 and 1808.". Doing some reading...
– russau
Feb 2 '14 at 16:19
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Cross-thread operation not valid: Control 'textBox1' accessed from a thread other than the thread it
... received in your serialPort1_DataReceived method is coming from another thread context than the UI thread, and that's the reason you see this error.
To remedy this, you will have to use a dispatcher as descibed in the MSDN article:
How to: Make Thread-Safe Calls to Windows Forms Controls
So instead...
How does the bitwise complement operator (~ tilde) work?
...t helps others who are not aware of One's Complement and Two's Complement. Read about them here. en.wikipedia.org/wiki/Ones%27_complement en.wikipedia.org/wiki/Two%27s_complement
– Sai
Dec 21 '14 at 3:40
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Change IPython/Jupyter notebook working directory
...ow "Start in:" can be empty in my tests with 4.1.1 and later. Perhaps they read this entry on SO and liked it, so long upvotes, nobody needs this anymore :)
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How to get all possible combinations of a list’s elements?
...nt(subset)
Or -- if you want to get snazzy (or bend the brain of whoever reads your code after you) -- you can generate the chain of "combinations()" generators, and iterate through that:
from itertools import chain, combinations
def all_subsets(ss):
return chain(*map(lambda x: combinations(s...