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Why is Java Vector (and Stack) class considered obsolete or deprecated?
...ections.synchronizedList - the fact that Vector combines both the "resized array" collection implementation with the "synchronize every operation" bit is another example of poor design; the decoration approach gives cleaner separation of concerns.
As for a Stack equivalent - I'd look at Deque/Array...
What is “vectorization”?
...s of rewriting a loop so that instead of processing a single element of an array N times, it processes (say) 4 elements of the array simultaneously N/4 times.
(I chose 4 because it's what modern hardware is most likely to directly support; the term "vectorization" is also used to describe a higher ...
Can I embed a custom font in an iPhone application?
...g the UIAppFonts key in their Info.plist file. The value of this key is an array of strings identifying the font files in the application’s bundle. When the system sees the key, it loads the specified fonts and makes them available to the application.
Once the fonts have been set in the Info.pli...
Can I pass parameters by reference in Java?
...
Also, an array of length 1 can be used to create a reference if you really want to confuse people :)
– Christoffer
Jul 1 '09 at 12:18
...
PHP - how to best determine if the current invocation is from CLI or web server?
...f ( php_sapi_name() === 'cli' )
{
return true;
}
if ( array_key_exists('SHELL', $_ENV) ) {
return true;
}
if ( empty($_SERVER['REMOTE_ADDR']) and !isset($_SERVER['HTTP_USER_AGENT']) and count($_SERVER['argv']) > 0)
{
return true;
}
if (...
区块链技术到底是什么鬼，为何被疯炒？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...金融机构共同建立了R3CEV联盟,旨在推动制定适合金融机构使用的区块链技术标准,推动技术落地。
区块链很火，但是真正了解它的人有多少呢？
一、什么是区块链？
说到区块链，就不得不说比特币。
2008年底，比特币之父中...
How to tell if a JavaScript function is defined
...ld be using typeof(Function()) because Function is a function; but so are Array, Object, and other built-in prototypes (for lack of a better term). If you were checking for an array you wouldn't use typeof(array) === typeof(Array) for example; you'd use typeof(array) === typeof(Array()) because you...
Create an array or List of all dates between two dates [duplicate]
...).Days)
.Select(offset => start.AddDays(offset))
.ToArray();
For loop:
var dates = new List<DateTime>();
for (var dt = start; dt <= end; dt = dt.AddDays(1))
{
dates.Add(dt);
}
EDIT:
As for padding values with defaults in a time-series, you could enumerate al...
How to draw vertical lines on a given plot in matplotlib?
... Draw horizontal lines across plot
:param ys: A scalar, list, or 1D array of vertical offsets
:param ax: The axis (or none to use gca)
:param lims: Optionally the (xmin, xmax) of the lines
:param plot_kwargs: Keyword arguments to be passed to plot
:return: The plot object corr...
Passing a single item as IEnumerable
...lper method is the cleanest way to do it, IMO. If you pass in a list or an array, then an unscrupulous piece of code could cast it and change the contents, leading to odd behaviour in some situations. You could use a read-only collection, but that's likely to involve even more wrapping. I think your...