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Is calculating an MD5 hash less CPU intensive than SHA family functions?
...
Yes, MD5 is somewhat less CPU-intensive. On my Intel x86 (Core2 Quad Q6600, 2.4 GHz, using one core), I get this in 32-bit mode:
MD5 411
SHA-1 218
SHA-256 118
SHA-512 46
and this in 64-bit mode:
MD5 407
SHA-1 312
SHA-256 148
SHA-512 189
Figures are in megabytes ...
is it possible to select EXISTS directly as a bit?
...o, you'll have to use a workaround.
If you must return a conditional bit 0/1 another way is to:
SELECT CAST(
CASE WHEN EXISTS(SELECT * FROM theTable where theColumn like 'theValue%') THEN 1
ELSE 0
END
AS BIT)
Or without the cast:
SELECT
CASE
WHEN EXISTS( SELECT 1 FROM the...
邻里聊：参考微信的原生应用案例 · App Inventor 2 中文网
...SHA-256
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🧩 原生实现...
R programming: How do I get Euler's number?
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150
The R expression
exp(1)
represents e, and
exp(2)
represents e^2.
This works because exp i...
How to convert list of tuples to multiple lists?
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answered Nov 10 '11 at 15:03
Sven MarnachSven Marnach
446k100100 gold badges833833 silver badges753753 bronze badges
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Assigning default value while creating migration file
...olumn :tweet, :retweets_count, :integer, :null => false, :default => 0
... and read Rails API
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How can I scale an entire web page with CSS?
...{
zoom: 3;
-moz-transform: scale(3);
-moz-transform-origin: 0 0;
}
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Google Map API v3 — set bounds and center
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answered Feb 5 '10 at 7:14
spencercoolyspencercooly
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Why does the C++ map type argument require an empty constructor when using []?
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edited Jul 8 '16 at 0:30
answered Mar 30 '09 at 0:01
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how to change an element type using jquery
...re's one way you could do it with jQuery:
var attrs = { };
$.each($("b")[0].attributes, function(idx, attr) {
attrs[attr.nodeName] = attr.nodeValue;
});
$("b").replaceWith(function () {
return $("<h1 />", attrs).append($(this).contents());
});
Example: http://jsfiddle.net/yapHk/
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