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Eclipse comment/uncomment shortcut?
...nt you can use Ctrl + / and for multiple line comment you can use Ctrl + Shift + / after selecting the lines you want to comment in java editor.
On Mac/OS X you can use ⌘ + / to comment out single lines or selected blocks.
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How to convert a Django QuerySet to a list
...r.id for existing_answer in existing_question_answers)
answers = itertools.ifilter(lambda x: x.id not in ids, answers)
Read when QuerySets are evaluated and note that it is not good to load the whole result into memory (e.g. via list()).
Reference: itertools.ifilter
Update with regard to the com...
Removing path and extension from filename in powershell
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It would be nice if beside each example in the top code snippet you showed exactly what text would be returned.
– deadlydog
Nov 12 '17 at 17:36
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How can an html element fill out 100% of the remaining screen height, using css only?
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The trick to this is specifying 100% height on the html and body elements.
Some browsers look to the parent elements (html, body) to calculate the height.
<html>
<body>
<div id="Header">
</div>
&l...
IE 8: background-size fix [duplicate]
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As posted by 'Dan' in a similar thread, there is a possible fix if you're not using a sprite:
How do I make background-size work in IE?
filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(
src='images/logo.gif',
sizingMethod='scale');
-ms-filter: "progid:DXImageTransform.Microso...
LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...赖有多么敏感。我们把这种情况称为实时数据处理（what if analysis）。LINGO有一个特征可方便地做到这件事。
在本该放数的地方输入一个问号（?）。
例3.5
data:
interest_rate,inflation_rate = .085 ?;
enddata
每一次求解模型时，LINGO都...
Save and load MemoryStream to/from a file
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Yes that is correct. The difference between them is that CopyTo copies from whatever the current position is instead of always from the begining like WriteTo does.
– AnorZaken
Sep 14 '15 at 19:33
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What is the difference between `-fpic` and `-fPIC` gcc parameters?
I've already read the gcc manpage, but I still can't understand the difference between -fpic and -fPIC . Can someone explain it, in a very simple and clear way?
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Extract numbers from a string
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If you just want to filter everything other than the numbers out, the easiest is to use filter_var:
$str = 'In My Cart : 11 items';
$int = (int) filter_var($str, FILTER_SANITIZE_NUMBER_INT);
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How to clone a Date object?
...tTime() or new Date(date.valueOf) instead since the first way can lead to differences between the dates in at least Firefox and IE (not Chrome). For example using toISOString() on the both dates in Firefox generates "2015-04-21T04:56:42.000Z" and "2015-04-21T04:56:42.337Z".
– c...