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How to easily truncate an array with JavaScript?
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edited May 21 '15 at 1:37
David Mason
2,58433 gold badges2626 silver badges3939 bronze badges
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Set a default parameter value for a JavaScript function
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From ES6/ES2015, default parameters are in the language specification.
function read_file(file, delete_after = false) {
// Code
}
just works.
Reference: Default Parameters - MDN
Default function parameters allow formal parameters...
How to Create Grid/Tile View?
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altocumulus
17.9k1111 gold badges5353 silver badges6969 bronze badges
answered Dec 12 '11 at 4:51
bookcaseybookcasey
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What browsers support HTML5 WebSocket API?
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Client side
Hixie-75:
Chrome 4.0 + 5.0
Safari 5.0.0
HyBi-00/Hixie-76:
Chrome 6.0 - 13.0
Safari 5.0.2 + 5.1
iOS 4.2 + iOS 5
Firefox 4.0 - support for WebSockets disabled. To enable it see here.
Opera 11 - with support disabled. To enable it...
Impossible to make a cached thread pool with a size limit?
... a finite size. For example,
new ThreadPoolExecutor(10, // core size
50, // max size
10*60, // idle timeout
TimeUnit.SECONDS,
new ArrayBlockingQueue<Runnable>(20)); // queue with a size
Addendum: this is a fairly old answer, and it appears that JDK changed its behavior when...
What is the difference between indexOf() and search()?
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sshow
7,15233 gold badges4444 silver badges7070 bronze badges
answered Dec 9 '08 at 20:29
ng.mangineng.mangine...
Why does Html.ActionLink render “?Length=4”
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edited May 6 '09 at 14:52
answered May 5 '09 at 10:45
ro...
What is the convention for word separator in Java package names?
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253
Here's what the official naming conventions document prescribes:
Packages
The prefix o...
How can I use UIColorFromRGB in Swift?
...rn UIColor(
red: CGFloat((rgbValue & 0xFF0000) >> 16) / 255.0,
green: CGFloat((rgbValue & 0x00FF00) >> 8) / 255.0,
blue: CGFloat(rgbValue & 0x0000FF) / 255.0,
alpha: CGFloat(1.0)
)
}
view.backgroundColor = UIColorFromRGB(0x209624)
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Generate a heatmap in MatPlotLib using a scatter data set
...np.random.randn(8873)
heatmap, xedges, yedges = np.histogram2d(x, y, bins=50)
extent = [xedges[0], xedges[-1], yedges[0], yedges[-1]]
plt.clf()
plt.imshow(heatmap.T, extent=extent, origin='lower')
plt.show()
This makes a 50x50 heatmap. If you want, say, 512x384, you can put bins=(512, 384) in th...