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How do you calculate log base 2 in Java for integers?
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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...
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...
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 to change the DataTable Column Name?
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edited Jun 21 '11 at 1:11
answered Jun 20 '11 at 5:47
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How to put individual tags for a scatter plot
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1 Answer
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Object.getOwnPropertyNames vs Object.keys
...ar a = {};
Object.defineProperties(a, {
one: {enumerable: true, value: 1},
two: {enumerable: false, value: 2},
});
Object.keys(a); // ["one"]
Object.getOwnPropertyNames(a); // ["one", "two"]
If you define a property without providing property attributes descriptor (meaning you don't use Obj...
Strange \n in base64 encoded string in Ruby
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edited Aug 26 '19 at 19:29
answered Apr 12 '10 at 9:38
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Extract substring in Bash
Given a filename in the form someletters_12345_moreleters.ext , I want to extract the 5 digits and put them into a variable.
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Static classes and methods in coffeescript
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