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Why does the C++ STL not provide any “tree” containers?
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By the same token, you could easily build an associative tree (to model unstructured key-value records, like JSON for example) by replacing vector with map in the example above. For full support of a JSON-like structure, you could use v...
How to tell bash that the line continues on the next line
... where commands are implicitly continued, namely when the line ends with a token than cannot legally terminate a command. In that case, the shell knows that more is coming, and the backslash can be omitted. Some examples:
# In general
$ echo "foo" \
> "bar"
foo bar
# Pipes
$ echo foo |
> cat...
Which HTML elements can receive focus?
...d events or other user inputs.
http://www.w3schools.com/cssref/sel_focus.asp
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MVC4 DataType.Date EditorFor won't display date value in Chrome, fine in Internet Explorer
...te a model property with [DataType(DataType.Date)] the default template in ASP.NET MVC 4 generates an input field of type="date":
<input class="text-box single-line"
data-val="true"
data-val-date="The field EstPurchaseDate must be a date."
id="EstPurchaseDate"
name...
What is C# analog of C++ std::pair?
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System.Web.UI contained the Pair class because it was used heavily in ASP.NET 1.1 as an internal ViewState structure.
Update Aug 2017: C# 7.0 / .NET Framework 4.7 provides a syntax to declare a Tuple with named items using the System.ValueTuple struct.
//explicit Item typing
(string Message, ...
mysqli_fetch_assoc() expects parameter / Call to a member function bind_param() errors. How to get t
...lf.
You have to also trust the error message. If it says that number of tokens doesn't match the number of bound variables then it is so. The same goes for the absent tables or columns. Given the choice, whether it's your own mistake or the error message is wrong, always stick to the former. Agai...
Detect changed input text box
...nd it on the list of HTML5 events : w3schools.com/tags/ref_eventattributes.asp or here help.dottoro.com/ljhxklln.php
– Ouadie
Jul 10 '13 at 8:44
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How to use JavaScript regex over multiple lines?
...egexes on HTML, though wiki syntaxes mixed with HTML can have all kinds of fun corner cases themselves.
– Brian Campbell
Jan 4 '10 at 14:56
2
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Vim Configure Line Number Coloring
...most platforms seems to be yellow (which is also used for some highlighted tokens). I would like to color the line numbers a dim gray; somewhere in the vicinity of #555 . I'm not picky though, any subdued color would be acceptable.
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Test for equality among all elements of a single vector
...ing by the mean:
# Determine if range of vector is FP 0.
zero_range <- function(x, tol = .Machine$double.eps ^ 0.5) {
if (length(x) == 1) return(TRUE)
x <- range(x) / mean(x)
isTRUE(all.equal(x[1], x[2], tolerance = tol))
}
If you were using this more seriously, you'd probably want to...