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Rails Observer Alternatives for 4.0
...e extracted gem.) While Observers were certainly abused and could easily become unwieldily at times, there were many use-cases outside of just cache-clearing where they were beneficial.
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Spring Boot + JPA : Column name annotation ignored
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How to normalize a path in PowerShell?
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You can use a combination of pwd, Join-Path and [System.IO.Path]::GetFullPath to get a fully qualified expanded path.
Since cd (Set-Location) doesn't change the process current working directory, simply passing a relative file name to a ....
How to update a plot in matplotlib?
...)
line1, = ax.plot(x, y, 'r-') # Returns a tuple of line objects, thus the comma
for phase in np.linspace(0, 10*np.pi, 500):
line1.set_ydata(np.sin(x + phase))
fig.canvas.draw()
fig.canvas.flush_events()
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What is the difference between compare() and compareTo()?
What is the difference between Java's compare() and compareTo() methods? Do those methods give same answer?
16 Answers
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What is the difference between 'my' and 'our' in Perl?
...les in order to use them under use strict without getting typo warnings or compile-time errors. Since Perl 5.6, it has replaced the obsolete use vars, which was only file-scoped, and not lexically scoped as is our.
For example, the formal, qualified name for variable $x inside package main is $main...
When should I use Debug.Assert()?
...nd the stack as if you had put a breakpoint there.
PS: If you liked Code Complete, I recommend following it up with this book. I bought it to learn about using WinDBG and dump files, but the first half is packed with tips to help avoid bugs in the first place.
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jQuery $(document).ready and UpdatePanels?
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An UpdatePanel completely replaces the contents of the update panel on an update. This means that those events you subscribed to are no longer subscribed because there are new elements in that update panel.
What I've done to work around th...
Dependency injection through constructors or property setters?
...e constructor. This avoids all null checking and the increased cyclomatic complexity.
– Mark Lindell
Mar 29 '10 at 20:05
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如果携程决心战略性亏损到底，去哪儿怕是只剩一条路可走 - 资讯 - 清泛网 -...
...世界上造就了一些非常成功的电子商务公司， 比如Booking.com。在中国，这个酒店专家的定位未来也一定前途无量！艺龙创办以来，一直是在线旅游的第一梯队，其酒店收入仅次于携程， 我相信，在携程成为股东以后，艺龙的效...