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XPath contains(text(),'some string') doesn't work when used with node with more than one Text subnod
...[contains(., 'ABC')]] matches any element (but the root node), that has at least one child text node, that contains ABC. . represents the context node. In this case, it's a child text node of any element but the root node. So for the document above the path matches the Street, and the Comment elemen...
Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]
...g in a way that is clear to future analysts (including future you) and the least susceptible to human coding mistakes. Although that will depend on your strengths and needs, generally this is considered one of the strengths of the new tidyverse set of packages. Another consideration (though not real...
Why are arrays of references illegal?
...), and your last line assumes an int can hold a pointer (usually false, at least where I work). But this is the only answer here with a legitimate rationale for why arrays of references are forbidden, so +1
– Nemo
Apr 19 '17 at 22:46
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Is a Java hashmap search really O(1)?
...ap with even a modest number of elements is pretty likely to experience at least one collision. Big O notation allows us to do something more compelling. Observe that for any arbitrary, fixed constant k.
O(n) = O(k * n)
We can use this feature to improve the performance of the hash map. We c...
Why is IntelliJ 13 IDEA so slow after upgrading from version 12?
...er and setting the max heap to 8 GB (was 512 MB) and the Max PermGen to at least 1GB (was 300MB).Example below:
-Xms128m
-Xmx8192m
-XX:MaxPermSize=1024m
Upon restart it was much faster.
For IntelliJ 2020 going back to 2017 on Mac
/Applications/IntelliJ IDEA.app/Contents/bin/idea.vmoptions
On a...
What are JavaScript's builtin strings?
...s [a-z], and spaces. The string length is limited mostly with your RAM (at least the body of my answer was successfully obfuscated). The output is supported by Chrome, Firefox, and IE.
Hint: the tool uses different obfuscation approach than was presented above.
...
Embedding DLLs in a compiled executable
...t that it will get deleted while your program is accessing the dll, but at least its a nuisance. AppData is good location). Also note that you have to write the bytes each time, you cant load from location just 'cos the dll already resides there.
For managed dlls, you need not write bytes, but dire...
use Winmerge inside of Git to file diff
... parameter (first pass of git diff, to copy the files) 2/ is the script at least called back at the end of the git diff?
– VonC
Sep 16 '10 at 4:24
1
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How to split a column into two columns?
... situations will happen in case you have mixed types in the column with at least one cell containing any number type. Then the split method returns NaN and the tolist method will return this value as is (NaN) which will result in ValueError (to overcome this issue you can cast it to string type befo...
What is the difference between 'git pull' and 'git fetch'?
...ur working copy.
The take away is to keep in mind that there are often at least three copies of a project on your workstation. One copy is your own repository with your own commit history. The second copy is your working copy where you are editing and building. The third copy is your local "cached"...