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How to extract one column of a csv file
...ere a quick bash way to print out the contents of only any single column? It is safe to assume that each row has the same number of columns, but each column's content would have different length.
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Why there is no ConcurrentHashSet against ConcurrentHashMap
...t a concurrent hash set view via ConcurrentHashMap.newKeySet(). This is a bit simpler than the old newSetFromMap which required you to pass in an empty map object. But it is specific to ConcurrentHashMap.
Anyway, the Java designers could have created a new set interface every time a new map interfa...
How do I check if a property exists on a dynamic anonymous type in c#?
...null;
}
var settings = new {Filename = @"c:\temp\q.txt"};
Console.WriteLine(IsPropertyExist(settings, "Filename"));
Console.WriteLine(IsPropertyExist(settings, "Size"));
Output:
True
False
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How can I test an AngularJS service from the console?
...ing them to components).
To get the injector of your app you need to grab it from an element that angular is handling. For example if your app is registered on the body element you call injector = angular.element(document.body).injector()
From the retrieved injector you can then get whatever servi...
What is the difference between Pan and Swipe in iOS?
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By definition, a swipe gesture is necessarily also a pan gesture -- both involve translational movement of touch points. The difference is in the recognizer semantics: a pan recognizer looks for the beginning of translational movemen...
Best way to read a large file into a byte array in C#?
...page requests), so I am looking for the most optimized way for doing this without taxing the CPU too much. Is the code below good enough?
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Unable to begin a distributed transaction
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Found it, MSDTC on the remote server was a clone of the local server.
From the Windows Application Events Log:
Event Type: Error
Event Source: MSDTC
Event Category: CM
Event ID: 4101
Date: 9/19/2011
Time: 1:...
How do you do relative time in Rails?
I'm writing a Rails application, but can't seem to find how to do relative time, i.e. if given a certain Time class, it can calculate "30 seconds ago" or "2 days ago" or if it's longer than a month "9/1/2008", etc.
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OSGi: What are the differences between Apache Felix and Apache Karaf?
Apache Karaf is a sub project of Apache Felix . It is defined as "a lightweight OSGi container".
3 Answers
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'await' works, but calling task.Result hangs/deadlocks
I have the following four tests and the last one hangs when I run it. Why does this happen:
5 Answers
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