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What are the main disadvantages of Java Server Faces 2.0?
...celets: why is it not a good idea to mix JSF/Facelets with HTML tags?
JSF 1.2 (May 2006)
This was the first release of the new JSF development team lead by Ryan Lubke. The new team did a lot of great work. There were also changes in the spec. The major change was the improvement of the view handli...
Change column type from string to float in Pandas
...
How about this?
a = [['a', '1.2', '4.2'], ['b', '70', '0.03'], ['x', '5', '0']]
df = pd.DataFrame(a, columns=['one', 'two', 'three'])
df
Out[16]:
one two three
0 a 1.2 4.2
1 b 70 0.03
2 x 5 0
df.dtypes
Out[17]:
one object
t...
Saving interactive Matplotlib figures
... mentioning here as this is the accepted answer), Matplotlib since version 1.2 allowed you to pickle figures. As the release notes state, it is an experimental feature and does not support saving a figure in one matplotlib version and opening in another. It's also generally unsecure to restore a p...
C++并发编程（中文版） - 文档下载 - 清泛网 - 专注C/C++及内核技术
...界… 1
1.1 什么是并发… 1
1.1.1 计算机系统的并发… 1
1.1.2 并发的方法… 3
1.2 为什么使用并发… 4
1.2.1 因划分重点而使用并发… 5
1.2.2 为了提高性能而使用并发… 5
1.2.3 什么时候不使用并发… 6
1.3 在C++中使用并发和多线程...
Pandas - Get first row value of a given column
...elect the ith row, use iloc:
In [31]: df_test.iloc[0]
Out[31]:
ATime 1.2
X 2.0
Y 15.0
Z 2.0
Btime 1.2
C 12.0
D 25.0
E 12.0
Name: 0, dtype: float64
To select the ith value in the Btime column you could use:
In [30]: df_test['Btime'].iloc[0]
Out...
What are the correct version numbers for C#?
...this writing:
C# 1.0 released with .NET 1.0 and VS2002 (January 2002)
C# 1.2 (bizarrely enough); released with .NET 1.1 and VS2003 (April 2003). First version to call Dispose on IEnumerators which implemented IDisposable. A few other small features.
C# 2.0 released with .NET 2.0 and VS2005 (Novemb...
Using a dispatch_once singleton model in Swift
...
tl;dr: Use the class constant approach if you are using Swift 1.2 or above and the nested struct approach if you need to support earlier versions.
From my experience with Swift there are three approaches to implement the Singleton pattern that support lazy initialization and thread saf...
How do I compare version numbers in Python?
... import version
>>> version.parse("2.3.1") < version.parse("10.1.2")
True
>>> version.parse("1.3.a4") < version.parse("10.1.2")
True
>>> isinstance(version.parse("1.3.a4"), version.Version)
True
>>> isinstance(version.parse("1.3.xy123"), version.LegacyVersio...
Auto line-wrapping in SVG text
...tch>
<g requiredFeatures="http://www.w3.org/Graphics/SVG/feature/1.2/#TextFlow">
<textArea width="200" height="auto">
Text goes here
</textArea>
</g>
<foreignObject width="200" height="200"
requiredFeatures="http://www.w3.org/TR/SVG1...
2014年腾讯代码报告—累计代码行14亿 - 创意 - 清泛网 - 专注C/C++及内核技术
...到2014年底，腾讯公司累计代码行已达14亿，参与编码人员1.2万。从图表可以...腾讯Code平台在官方公众号公布了《2014年度腾讯代码报告》，截止到2014年底，腾讯公司累计代码行已达14亿，参与编码人员1.2万。从图表可以看出，最...