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What is the difference between call and apply?
...rameters be listed explicitly. A useful mnemonic is "A for array and C for comma."
See MDN's documentation on apply and call.
Pseudo syntax:
theFunction.apply(valueForThis, arrayOfArgs)
theFunction.call(valueForThis, arg1, arg2, ...)
There is also, as of ES6, the possibility to spread the array...
Are there any smart cases of runtime code modification?
...rating code at run time can be useful for:
Some virtual machines use JIT compilation to improve performance.
Generating specialized functions on the fly has long been common in computer graphics. See e.g. Rob Pike and Bart Locanthi and John Reiser Hardware Software Tradeoffs for Bitmap Graphics on...
How can I let a table's body scroll but keep its head fixed in place?
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I had to find the same answer. The best example I found is http://www.cssplay.co.uk/menu/tablescroll.html - I found example #2 worked well for me. You will have to set the height of the inner table with Java Script, the rest is CSS.
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Adding placeholder text to textbox
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What is
..., the ? must be Integer,Double, Short etc
– jbailie1991
Feb 27 '18 at 14:27
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Why shouldn't `'` be used to escape single quotes?
...s, you can use
html | numeric | hex
‘ | ‘ | ‘ // for the left/beginning single-quote and
’ | ’ | ’ // for the right/ending single-quote
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How to sum a variable by group
...e(cbind(x$Frequency, x$Metric2, x$Metric3) ...
(embedding @thelatemail comment), aggregate has a formula interface too
aggregate(Frequency ~ Category, x, sum)
Or if you want to aggregate multiple columns, you could use the . notation (works for one column too)
aggregate(. ~ Category, x, sum)...
Multiline strings in JSON
...at you think your are. Maybe this answer explains it better: stackoverflow.com/a/9295597/359996. Note especially the bit about double escaping.
– user359996
Mar 7 '14 at 17:28
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Java Hashmap: How to get key from value?
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If you choose to use the Commons Collections library instead of the standard Java Collections API, you can achieve this with ease.
The BidiMap interface in the Collections library is a bi-directional map, allowing you to map a key to a value (like n...
Fastest Way of Inserting in Entity Framework
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To your remark in the comments to your question:
"...SavingChanges (for each
record)..."
That's the worst thing you can do! Calling SaveChanges() for each record slows bulk inserts extremely down. I would do a few simple tests which will v...