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Float vs Decimal in ActiveRecord
...a Float. It's like a scientific notation for binary (something like +1.43*10^2). Because of that, it is impossible to store fractions and decimals in Float exactly.
That's why there is a Decimal format. If you do this:
irb:001:0> "%.47f" % (1.0/10)
=> "0.100000000000000005551115123125782702...
google mock分享（全网最全最好的gmock文档，没有之一） - C/C++ - 清泛网 ...
...同学吧。
Google Mock概述
Google Mock（简称gmock）是Google在2008年推出的一套针对C++的Mock框架，它灵感取自于jMock、EasyMock、harcreat。它提供了以下这些特性：
轻松地创建mock类
支持丰富的匹配器（Matcher）和行为（Action）
支持有...
How to use split?
...= 'something -- something_else';
var substr = str.split(' -- ');
// substr[0] contains "something"
// substr[1] contains "something_else"
If this value is in some field you could also do:
tRow.append($('<td>').text($('[id$=txtEntry2]').val().split(' -- ')[0])));
...
Does git return specific return error codes?
...iled; fix conflicts and then commit the result.
$ echo $?
1
Git returns 0 when it merges correctly, as expected.
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How does the ThreadStatic attribute work?
...emoting.
– user2173353
Aug 27 at 12:02
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What is the tilde (~) in the enum definition?
...
10 Answers
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Sorting Python list based on the length of the string
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205
When you pass a lambda to sort, you need to return an integer, not a boolean. So your code sho...
LINQ Group By into a Dictionary Object
...is immutable.
– Amit
Nov 12 '14 at 20:15
1
My 2 Cents (just 'cause it kept me struggling for an h...
How can I remove 3 characters at the end of a string in php?
...
Just do:
echo substr($string, 0, -3);
You don't need to use a strlen call, since, as noted in the substr docs:
If length is given and is negative, then that many characters will be omitted from the end of string
...
How to Decrease Image Brightness in CSS
...f image effects, including brightness:
#myimage {
filter: brightness(50%);
}
You can find a helpful article about it here: http://www.html5rocks.com/en/tutorials/filters/understanding-css/
An another: http://davidwalsh.name/css-filters
And most importantly, the W3C specs: https://dvcs.w3.or...