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UITableView - change section header color
How can I change color of a section header in UITableView?
31 Answers
31
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How can I convert an RGB image into grayscale in Python?
...A')? why not .convert('gray')? Seems needlessly cryptic. The PIL documentation doesn't mention anything about 'LA' for the convert function.
– waspinator
Aug 31 '12 at 1:32
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iOS: How to store username/password within an app?
I have a login-screen in my iOS app.
The username and password will be saved in the NSUserDefaults and be loaded into the login-screen again when you enter the app again (of course, NSUserDefaults are permanent).
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How do you add multi-line text to a UIButton?
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For iOS 6 and above, use the following to allow multiple lines:
button.titleLabel.lineBreakMode = NSLineBreakByWordWrapping;
// you probably want to center it
button.titleLabel.textAlignment = NSTextAlignmentCenter; // if you wa...
Unicode (UTF-8) reading and writing to files in Python
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In the notation
u'Capit\xe1n\n'
the "\xe1" represents just one byte. "\x" tells you that "e1" is in hexadecimal.
When you write
Capit\xc3\xa1n
into your file you have "\xc3" in it. Those are 4 bytes and in your code you read them a...
An App ID with Identifier '' is not available. Please enter a different string
I am trying to add a new APP ID to prepare for App Store submission and got the following error under the bundle ID I provided.
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成功熬了四年还没死？一个IT屌丝创业者的深刻反思 - 资讯 - 清泛网 - 专注C...
...好像拳击馆里当陪练的小角色，去和泰森比了一年的武，怎么可能不累呢?
当我07年进入互联网行业的时候，就是那个拳击馆里陪练的小角色。我被迫去跟全国各地的泰森比拼，结果累的半死。后来我开始反思最初的目标，为...
viewWillDisappear: Determine whether view controller is being popped or is showing a sub-view contro
I'm struggling to find a good solution to this problem. In a view controller's -viewWillDisappear: method, I need to find a way to determine whether it is because a view controller is being pushed onto the navigation controller's stack, or whether it is because the view controller is disappearing ...
Xcode Simulator: how to remove older unneeded devices?
I'm running Xcode 4.3.1 iOS-Simulator which originally only supports iOS 5.1.
18 Answers
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Deep Learning（深度学习）学习笔记整理系列之（三） - 大数据 & AI - 清泛...
...特征表达。那么多少层才合适呢？用什么架构来建模呢？怎么进行非监督训练呢？
五、Deep Learning的基本思想
假设我们有一个系统S，它有n层（S1,…Sn），它的输入是I，输出是O，形象地表示为： I =>S1=>S2=>…..=>Sn => O，如...