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Getting DOM elements by classname
... trying to get an element within a DOM node that have a given class name. What's the best way to get that sub-element?
6 A...
Git SSH error: “Connect to host: Bad file number”
...vant.
If you focus on it you'll waste your time as it is not a hint about what the actual problem is, just an effect of running git's ssh on Windows. It's not even a sign that the git or ssh install or configuration is wrong. Really, ignore it.
The very same command on Linux produced instead thi...
How to drop columns by name in a data frame
...hich(names(dat) %in% c("foo","bar"))] ## deletes all columns! Probably not what you wanted...
Instead use subset or the ! function:
dat[ , !names(dat) %in% c("z","u")] ## works as expected
dat[ , !names(dat) %in% c("foo","bar")] ## returns the un-altered data.frame. Probably what you want
I hav...
How to find reason of failed Build without any error or warning
...ow. This then showed that the custom action (in my case HgVersionFile) was what had failed.
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Moving decimal places over in a double
...mount of rounding on your behalf, but it is not much. If you are wondering what it might look like without rounding:
System.out.println(new BigDecimal(0.1));
System.out.println(new BigDecimal(x));
prints:
0.100000000000000005551115123125782702118158340454101562
12.3399999999999998578914528479799...
NoSql vs Relational database
...re machines provides the speed and the redundancy.
Everyone else realizes what Google just did.
Brewers CAP theorem is proven. All RDBMS systems of use are CA systems. People begin playing with CP and AP systems as well. K/V stores are vastly simpler, so they are the primary vehicle for the resear...
Sort a Map by values
... Just in case it's not clear to people: this solution will probably not do what you want if you have multiple keys mapping to the same value -- only one of those keys will appear in the sorted result.
– Maxy-B
Nov 24 '11 at 4:37
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Converting java.util.Properties to HashMap
...t is not the problem here: the generic arguments don't match. You can feed whatever you want in a Hashtable<Object, Object>, even things which are not strings -- even keys which are not strings.
– fge
Jun 20 '13 at 8:56
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What is the shortcut to Auto import all in Android Studio?
...
This answer is what I was after.
– QED
Aug 27 '15 at 3:17
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String concatenation vs. string substitution in Python
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What you want to concatenate/interpolate and how you want to format the result should drive your decision.
String interpolation allows you to easily add formatting. In fact, your string interpolation version doesn't do th...