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After array_filter(), how can I reset the keys to go in numerical order starting at 0
...php "If no callback is supplied, all entries of array equal to FALSE (see converting to boolean) will be removed." And it should be common knowledge among PHP programmers that 0, null, false, '' and '0' all evaluate to false when coerced to boolean.
– madsen
M...
How to set time zone of a java.util.Date?
...ies for generating all kinds of other String formats.
If required, you can convert from Joda-Time DateTime to a java.util.Date.
Java.util.Date date = dateTimeIndia.toDate();
Search StackOverflow for "joda date" to find many more examples, some quite detailed.
†Actually there is a time zone embed...
What is the most efficient way to deep clone an object in JavaScript?
...tring representation of the date in ISO format, which JSON.parse() doesn't convert back to a Date object. See this answer for more details.
Additionally, please note that, in Chrome 65 at least, native cloning is not the way to go. According to JSPerf, performing native cloning by creating a new fu...
What is PECS (Producer Extends Consumer Super)?
...t.add("prem");
List<Object> listObject=list; //Type mismatch: cannot convert from List<String> to List<Object> at Compiletime
more examples
bounded(i.e. heading toward somewhere) wildcard : There are 3 different flavours of wildcards:
In-variance/Non-variance: ? or ? ex...
How to concatenate twice with the C preprocessor and expand a macro as in “arg ## _ ## MACRO”?
...argument is 'mine'; it is fully expanded to 'mine'; it is then substituted into the replacement string:
EVALUATOR(mine, VARIABLE)
Now the macro EVALUATOR is discovered, and the arguments are isolated as 'mine' and 'VARIABLE'; the latter is then fully expanded to '3', and substituted into the repl...
Who architected / designed C++'s IOStreams, and would it still be considered well-designed by today'
... does it the other way around by using stringstream as the standard way of converting to a string.
Poor support for i18n
Iostream-based output splits string literals into pieces.
cout << "My name is " << name << " and I am " << occupation << " from " << hometow...
Redis key naming conventions?
..., toystring) {
var toy = JSON.parse(toystring);
...
}
No need to convert slashes to colons and vice versa. Convenient, don't you think?
Note: always ensure that user is able to access only things you intended. The raw URL-to-key approach above is able to fetch user/1/password as well, as ...
What's with 181783497276652981 and 8682522807148012 in Random (Java 7)?
...
Was this number simply mis-copied into Java?
Yes, seems to be a typo.
Does 181783497276652981 have an acceptable merit?
This could be determined using the evaluation algorithm presented in the paper. But the merit of the "original" number is probably h...
Where do I find the current C or C++ standard documents?
...he standard is maintained as LaTeX sources on Github. These sources can be converted to HTML using cxxdraft-htmlgen. The following sites maintain HTML pages so generated:
Tim Song - Current working draft - C++11 - C++14 - C++17
Eelis - Current working draft
Tim Song also maintains generated HTML...
Why is rbindlist “better” than rbind?
...t shines are
Fast vectorized merge of list of data.frames by row
Trouble converting long list of data.frames (~1 million) to single data.frame using do.call and ldply
These have benchmarks that show how fast it can be.
rbind.data.frame is slow, for a reason
rbind.data.frame does lots of check...