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Converting a string to a date in JavaScript
...parts[1]); JavaScript counts months from 0:
// January - 0, February - 1, etc.
var mydate = new Date(parts[0], parts[1] - 1, parts[2]);
console.log(mydate.toDateString());
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How do I convert an existing callback API to promises?
...d with together async\await in ES7 to make the program flow wait for a fullfiled result like the following:
function getName () {
return new Promise(function (fulfilled, rejected) {
var name = "John Doe";
// wait 3000 milliseconds before calling fulfilled() method
set...
What is WebKit and how is it related to CSS?
...ions relating to CSS, jQuery, layouts, cross-browers compatibility issues, etc...
14 Answers
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Pass a data.frame column name to a function
...1(df, "B")
fun1(df, c("B","A"))
There's no need to use substitute, eval, etc.
You can even pass the desired function as a parameter:
fun1 <- function(x, column, fn) {
fn(x[,column])
}
fun1(df, "B", max)
Alternatively, using [[ also works for selecting a single column at a time:
df <- ...
Does a finally block run even if you throw a new Exception?
...block is intended for resource clean-up (closing DB connections, releasing file handles etc), not for must-run logic. If it must-run do it before the try-catch block, away from something that could throw an exception, as your intention is almost certainly functionally the same.
...
JRuby on Rails vs. Ruby on Rails, what's difference?
... to do this completely (last time I used Mingle, it had un-obfuscated Ruby files...).
– Marnen Laibow-Koser
Nov 3 '11 at 16:31
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What's the advantage of Logic-less template (such as mustache)?
... yourself in the foot. In the old JSP days, it was very common to have JSP files sprinkled with Java code, which made refactoring much harder, since you had your code scattered.
If you prevent logic in templates by design (like mustache does), you will be obliged to put the logic elsewhere, so your...
Freeze screen in chrome debugger / DevTools panel for popover inspection?
...r window and you have 5 seconds to find your element and click/hover/focus/etc it, before the breakpoint will be hit and the browser will "freeze".
Now you can inspect your clicked/hovered/focused/etc element in peace.
Of course you can modify the javascript and the timing, if you get the idea.
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How can I find non-ASCII characters in MySQL?
...mported from Excel . The data contains non- ASCII characters (em dashes, etc.) as well as hidden carriage returns or line feeds. Is there a way to find these records using MySQL?
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Storing sex (gender) in database
...s a more narrow number of values. Using CHAR(1) would make using "m", "f",etc natural keys, vs the use of numeric data which are referred to as surrogate/artificial keys. CHAR(1) is also supported on any database, should there be a need to port.
Conclusion
I would use Option 2: CHAR(1).
Addendu...