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Resizing an image in an HTML5 canvas

...g.height; elem.style.display = "none"; this.ctx = elem.getContext("2d"); this.ctx.drawImage(img, 0, 0); this.img = img; this.src = this.ctx.getImageData(0, 0, img.width, img.height); this.dest = { width : sx, height : Math.round(img.height * sx / img.width), ...
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Alphabet range in Python

... 822 >>> import string >>> string.ascii_lowercase 'abcdefghijklmnopqrstuvwxyz' I...
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How do you do relative time in Rails?

... i.e. if given a certain Time class, it can calculate "30 seconds ago" or "2 days ago" or if it's longer than a month "9/1/2008", etc. ...
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How does python numpy.where() work?

... answered Apr 12 '11 at 22:48 Joe KingtonJoe Kington 223k5858 gold badges528528 silver badges435435 bronze badges ...
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How to Batch Rename Files in a macOS Terminal?

... 234 In your specific case you can use the following bash command (bash is the default shell on mac...
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What is the difference between join and merge in Pandas?

...import pandas as pd left = pd.DataFrame({'key': ['foo', 'bar'], 'val': [1, 2]}).set_index('key') right = pd.DataFrame({'key': ['foo', 'bar'], 'val': [4, 5]}).set_index('key') left.join(right, lsuffix='_l', rsuffix='_r') val_l val_r key foo 1 4 bar 2 5 The sam...
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LINQ to SQL Left Outer Join

... logical8 83288 silver badges1212 bronze badges answered Mar 31 '09 at 8:33 Marc Gravell♦Marc Gravell ...
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OAuth 2.0: Benefits and use cases — why?

Could anyone explain what's good about OAuth2 and why we should implement it? I ask because I'm a bit confused about it — here's my current thoughts: ...
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Add column with constant value to pandas dataframe [duplicate]

... 21 The reason this puts NaN into a column is because df.index and the Index of your right-hand-sid...
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How to delete a module in Android Studio

...Excluded" option isn't there anymore. The current (Android Studio 0.8.x - 2.2.x) way to do this is via the Project Structure dialog. It can be accessed via "File -> Project Structure" or by right-clicking on a Module and selecting "Module Settings". Then select the module, and click the "minu...