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Why {} + {} is NaN only on the client side? Why not in Node.js?
While [] + [] is an empty string, [] + {} is "[object Object]" , and {} + [] is 0 . Why is {} + {} NaN?
1 Answer
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Set time part of DateTime in ruby
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Also to note that the last argument needs to be a string of the timezone e.g.("-0700") for MST, not an integer
– Donavan White
Nov 24 '15 at 17:20
2
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What is the equivalent of “android:fontFamily=”sans-serif-light" in Java code?
...efault font family used, use any of this by replacing the double quotation string "sans-serif-medium"
FONT FAMILY TTF FILE
1 casual ComingSoon.ttf
2 cursive DancingScript-Regular.ttf
3 monospace ...
Does pandas iterrows have performance issues?
...ou use a function with a try-catch), they are good for a lot of use cases (string/regex stuff) where pandas methods do not have vectorized (in the truest sense of the word) implementations. Do you think it is worth mentioning LCs are a faster, lower overhead alternative to pandas apply and many pand...
Why doesn't Java Map extend Collection?
...being a particularly useful abstraction. For example:
Set<Map.Entry<String,String>>
would allow:
set.add(entry("hello", "world"));
set.add(entry("hello", "world 2");
(assuming an entry() method that creates a Map.Entry instance)
Maps require unique keys so this would violate this....
How does PHP 'foreach' actually work?
...hat, in all cases but 3, the array is modified during the loop, while this extra reference is alive. This triggers a clone, and that explains what's going on here!
Here is an excellent article for another side effect of this copy-on-write behaviour: The PHP Ternary Operator: Fast or not?
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Is there a good reason to use upper case for SQL keywords? [closed]
... SQL. Examples include in-line queries, programmer documentation, and text strings within the code of another language. The same is not true anywhere near as often for languages like Python or C++; yes, their code does sometimes appear in those places, but it's not routinely done the way it is with ...
Does a finally block run even if you throw a new Exception?
...s executes.
public class ExceptionTest {
public static void someFunction(String input) throws Exception {
try {
if( input.equals("ABC") ) {
System.out.println("Matched");
}
} catch (Exception e) {
throw new Exception(e);
} finally {
System.ou...
Unique combination of all elements from two (or more) vectors
...sing, which works better than the classic expand.grid function because (1) strings are not converted into factors and (2) the sorting is more intuitive:
library(tidyr)
a <- c("ABC", "DEF", "GHI")
b <- c("2012-05-01", "2012-05-02", "2012-05-03", "2012-05-04", "2012-05-05")
crossing(a, b)
# ...
Multiple commands in gdb separated by some sort of delimiter ';'?
...active if the command
# that invoked them is interactive.
# to_string is false. We just want to write the output of the commands, not capture it.
gdb.execute(fragment, from_tty=from_tty, to_string=False)
print()
Cmds()
end
example invocation:
$ gdb
(gdb) cmds echo hi ; e...