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Javascript equivalent of Python's zip function
...utput.
As parseInt's second argument is the base/number radix, to which to convert the number to, and since map passes the index as the second argument to its argument-function, a wrapper function is used.
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Create RegExps on the fly using string variables
...e commonly you want to replace all occurrences, in which case, you have to convert the string into a global (/.../g) RegExp. You can do this from a string using the new RegExp constructor:
new RegExp(string_to_replace, 'g')
The problem with this is that any regex-special characters in the string ...
What is the difference between C, C99, ANSI C and GNU C?
... was "the C language".
The year after, the American standard was accepted internationally and published by ISO (ISO 9899:1990). This release is called C90. Technically, it is the same standard as C89/ANSI-C. Formally, it replaced C89/ANSI-C, making them obsolete. From 1990-1999, C90 was "the C lang...
Modify request parameter with servlet filter
... sanitize(String input) {
String result = "";
for (int i = 0; i < input.length(); i++) {
if (allowedChars.indexOf(input.charAt(i)) >= 0) {
result += input.charAt(i);
}
}
return result;
}...
What's the difference between String(value) vs value.toString()
...cation, the [[DefaultValue]] internal operation.
Briefly summarized, when converting from Object-to-String, the following steps are taken:
If available, execute the toString method.
If the result is a primitive, return result, else go to Step 2.
If available, execute the valueOf method.
If t...
Mean per group in a data.frame [duplicate]
...0.33333
#3 Cat 2 44.66667 54.00000
Using data.table:
# At first, I convert the data.frame to data.table and then I group it
setDT(d)
d[, .(Rate1 = mean(Rate1), Rate2 = mean(Rate2)), by = .(Name)]
# Name Rate1 Rate2
#1: Aira 16.33333 47.00000
#2: Ben 31.33333 50.33333
#3: Cat 44.66...
Which concurrent Queue implementation should I use in Java?
...e moment. But the consumer side is more complicated because poll won't go into a nice sleep state. You have to handle that yourself.
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How to set standard encoding in Visual Studio
...files comform to set rules. Note that Visual Studio does not automatically convert all your files but do its bit when you work with files in IDE (open and save).
What next
While you could have a Visual-studio-wide setup, I strongly suggest to still include an EditorConfig root to your solution ve...
What does “Content-type: application/json; charset=utf-8” really mean?
...", "UTF-8");) for me and I had to retrieve response data as draw bytes and convert it into String using UTF-8. So, it is recommended to be explicit and avoid assumption of default value.
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How do I change the formatting of numbers on an axis with ggplot?
... E.g.: (3x10^+2 -> 3x10^2) l <- gsub("e\\+","e",l) and after it: # convert 1x10^ or 1.000x10^ -> 10^ l <- gsub("\\'1[\\.0]*\\'\\%\\*\\%", "", l) to make it in format usually used in papers.
– John_West
Feb 23 '16 at 14:08
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