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Comments in .gitignore?
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713
Yes, you may put comments in there. They however must start at the beginning of a line.
cf. ht...
How to show vertical line to wrap the line in Vim?
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Edit: For Vim >=7.3 see answer below.
Unfortunately vim has no mechanism to display a verti...
What is RSS and VSZ in Linux memory management
... to 2500K of shared libraries, has 200K of stack/heap allocations of which 100K is actually in memory (rest is swapped or unused), and it has only actually loaded 1000K of the shared libraries and 400K of its own binary then:
RSS: 400K + 1000K + 100K = 1500K
VSZ: 500K + 2500K + 200K = 3200K
Since...
What are file descriptors, explained in simple terms?
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python pandas: Remove duplicates by columns A, keeping the row with the highest value in column B
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How do you calculate log base 2 in Java for integers?
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Responsive iframe using Bootstrap
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Option 1
With Bootstrap 3.2 you can wrap each iframe in the responsive-embed wrapper of your c...
How do you delete a column by name in data.table?
...of the following will remove column foo from the data.table df3:
# Method 1 (and preferred as it takes 0.00s even on a 20GB data.table)
df3[,foo:=NULL]
df3[, c("foo","bar"):=NULL] # remove two columns
myVar = "foo"
df3[, (myVar):=NULL] # lookup myVar contents
# Method 2a -- A safe idiom for e...