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list.clear() vs list = new ArrayList(); [duplicate]
...d the average size is lower, it might be faster to make a new ArrayList.
http://www.docjar.com/html/api/java/util/ArrayList.java.html
public void clear() {
modCount++;
// Let gc do its work
for (int i = 0; i < size; i++)
elementData[i] = null;
size = 0;
}
...
Large, persistent DataFrame in pandas
...Python internal issues (this is vague but it's been known for a long time: http://github.com/pydata/pandas/issues/407).
At the moment there isn't a perfect solution (here's a tedious one: you could transcribe the file row-by-row into a pre-allocated NumPy array or memory-mapped file--np.mmap), but...
IIS7 Cache-Control
....g. Images or event the Default Web Application folder) and then click on "HTTP Response Headers". Then you have to click on "Set Common Header.." in the right pane and select the "Expire Web content". There you can easily configure a max-age of 24 hours by choosing "After:", entering "24" in the Te...
Can anyone explain this strange behavior with signed floats in C#?
...
I found the answer at http://blogs.msdn.com/xiangfan/archive/2008/09/01/magic-behind-valuetype-equals.aspx.
The core piece is the source comment on CanCompareBits, which ValueType.Equals uses to determine whether to use memcmp-style comparison:
...
How do you specify command line arguments in Xcode 4?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
What is Robocopy's “restartable” option?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Targeting only Firefox with CSS
...;
</html>
ff.xml
<?xml version="1.0"?>
<bindings xmlns="http://www.mozilla.org/xbl">
<binding id="load-mozilla-css">
<implementation>
<constructor>
<![CDATA[
var link = document.createElement("link");
...
How to find an available port?
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If you use Spring you may try http://docs.spring.io/spring/docs/4.0.5.RELEASE/javadoc-api/org/springframework/util/SocketUtils.html#findAvailableTcpPort--
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Font-awesome, input type 'submit'
...ess" value="&#xf011; Login"/>
here is the link for the cheatsheet
http://fortawesome.github.io/Font-Awesome/cheatsheet/
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...
How to change my Git username in terminal?
...ry page on Github and get the new URL. Then use
git remote set-url origin https://{new url with username replaced}
to update the URL with your new username.
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