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Locking pattern for proper use of .NET MemoryCache
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This is my 2nd iteration of the code. Because MemoryCache is thread safe you don't need to lock on the initial read, you can just read and if the cache returns null then do the lock check to see if you need to create the string. It greatly ...
Differences between std::make_unique and std::unique_ptr with new
Does std::make_unique have any efficiency benefits like std::make_shared ?
4 Answers
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scala vs java, performance and memory? [closed]
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Scala makes it very easy to use enormous amounts of memory without realizing it. This is usually very powerful, but occasionally can be annoying. For example, suppose you have an array of strings (called array), and a map from those st...
Python: print a generator expression?
...or expression is (almost) exactly equivalent to having [] brackets around it. So yeah, you can do
>>> list((x for x in string.letters if x in (y for y in "BigMan on campus")))
But you can just as well do
>>> [x for x in string.letters if x in (y for y in "BigMan on campus")]
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Split comma-separated strings in a column into separate rows
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This old question frequently is being used as dupe target (tagged with r-faq). As of today, it has been answered three times offering 6 different approaches but is lacking a benchmark as guidance which of the approaches is the fastest1.
The benchmarked solutions include
Matthew Lundberg'...
What's an elegant way to conditionally add a class to an HTML element in a view?
I occasionally have to add a class to an html element based on a condition. The problem is I can't figure out a clean way of doing it. Here's an example of the stuff I've tried:
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Setting JDK in Eclipse
...tem Library, click on Add Library and choose the installed JRE to compile with. Some compilers can be configured to compile at a back-level compiler version. I think that's why you're seeing the addition version options.
s...
What characters are forbidden in Windows and Linux directory names?
... of forbidden filename characters is not going to work on Windows because it reserves filenames as well as characters. Yes, characters like
* " ? and others are forbidden, but there are a infinite number of names composed only of valid characters that are forbidden. For example, spaces and dots are ...
Is there an easy way to add a border to the top and bottom of an Android View?
I have a TextView and I'd like to add a black border along its top and bottom borders. I tried adding android:drawableTop and android:drawableBottom to the TextView, but that only caused the entire view to become black.
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WPF ToolBar: how to remove grip and overflow
...the ToolBar.
To remove the Overflow ToggleButton, you will have to remove it in a custom ControlTemplate as sixlettervariables suggests, which if you have blend or can download the Blend 3 Preview is not overly difficult.
You could also just hide the button in the loaded event of the ToolBar, tho...