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Random record in ActiveRecord
...order method provided by your database, i.e. Thing.order("RANDOM()").limit(100) for 100 randomly selected entries. (Be aware that it's RANDOM() in PostgreSQL and RAND() in MySQL ... not as portable as you may want it to be.)
– Florian Pilz
Jun 16 '11 at 13:17
...
How to position text over an image in css
...ge {
position: absolute;
left: 0;
top: 0;
}
#text {
z-index: 100;
position: absolute;
color: white;
font-size: 24px;
font-weight: bold;
left: 150px;
top: 350px;
}
<div id="container">
<img id="image" src="http://www.noao.edu/image_gallery/images/d4/andro...
一个自媒体的运营手记：我做公众号已经两年多了 - 资讯 - 清泛网 - 专注C/C...
...济盛行，花一块钱，就想赚两块钱回来，花10块钱就想赚100块回来，因为那个时代，物资短缺，很多东西只要造出来了，无论好坏，招聘几个销售就能卖出去，还能赚到钱，所以很多老板花钱都是按照计划来。但是现在不一样了...
Understanding the Rails Authenticity Token
...could just send an HTTP request to the server saying GET /transfer?amount=$1000000&account-to=999999, right?
Wrong. The hackers attack won't work. The server will basically think?
Huh? Who is this guy trying to initiate a transfer. It's not the owner of the account, that's for sure.
How...
How to access parent scope from within a custom directive *with own scope* in AngularJS?
...he $parent property of each scope references the same parent scope.Angular v1.3 update: If the directive also creates an isolate scope, the transcluded scope is now a child of the isolate scope. The transcluded and isolate scopes are no longer siblings. The $parent property of the transcluded scop...
Truncate Two decimal places without rounding
...
value = Math.Truncate(100 * value) / 100;
Beware that fractions like these cannot be accurately represented in floating point.
share
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improve ...
Get first n characters of a string
... of a word using the wordwrap function:
function truncate($string,$length=100,$append="&hellip;") {
$string = trim($string);
if(strlen($string) > $length) {
$string = wordwrap($string, $length);
$string = explode("\n", $string, 2);
$string = $string[0] . $append;
}
retu...
How to keep indent for second line in ordered lists via CSS?
...fectly pixel-wise. Second, what about when the list reaches the number 10? 100? The text-indent won't work, it will not be aligned. This answer should be down-voted.
– Sunny
Mar 13 '15 at 5:41
...
Textarea onchange detection
... () => {
let textLn = textArea.value.length;
if(textLn >= 100) {
textArea.style.fontSize = '10pt';
}
})
})()
<html>
<textarea id='my_text_area' rows="4" cols="50" style="font-size:40pt">
This text will change font after 100.
</textarea>
</...
Improve subplot size/spacing with many subplots in matplotlib
... as plt
import matplotlib.ticker as tic
fig = plt.figure()
x = np.arange(100)
y = 3.*np.sin(x*2.*np.pi/100.)
for i in range(5):
temp = 510 + i
ax = plt.subplot(temp)
plt.plot(x,y)
plt.subplots_adjust(hspace = .001)
temp = tic.MaxNLocator(3)
ax.yaxis.set_major_locator(temp)...