February 2013
Intermediate to advanced
380 pages
7h 45m
Japanese
Content preview from Nodeクックブック
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301
レシピ 9.2 モジュールのモックアップを作成する
test/index.js（続き）
mp3dat.stat(testFile, function(err, stats) {
should.ifError(err);
//
プロパティの存在判定
stats.should.have.property('duration');
stats.should.have.property('bitrate');
stats.should.have.property('filesize');
stats.should.have.property('timestamp');
stats.should.have.property('timesig');
//
プロパティの
type
判定
stats.duration.should.be.an.instanceof(Object);
stats.bitrate.should.be.a('number');
stats.filesize.should.be.a('number');
stats.timestamp.should.be.a('number');
stats.timesig.should.match(/^\d+:\d+:\d+$/);
// duration
プロパティの各値の存在判定
stats.duration.should.have.keys('hours', 'minutes', 'seconds', 'milliseconds'); ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.