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What command means “do nothing” in a conditional in Bash?

Sometimes when making conditionals, I need the code to do nothing, e.g., here, I want Bash to do nothing when $a is greater than "10", print "1" if $a is less than "5", otherwise, print "2": ...
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Are there any cases when it's preferable to use a plain old Thread object instead of one of the newe

I see a lot of people in blog posts and here on SO either avoiding or advising against the usage of the Thread class in recent versions of C# (and I mean of course 4.0+, with the addition of Task & friends). Even before, there were debates about the fact that a plain old thread's functionality c...
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HTTP 1.0 vs 1.1

Could somebody give me a brief overview of the differences between HTTP 1.0 and HTTP 1.1? I've spent some time with both of the RFCs, but haven't been able to pull out a lot of difference between them. Wikipedia says this: ...
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Relational table naming convention [closed]

I'm starting a new project and would like to get my table- and column names right from the start. For example I've always used plural in table names but recently learned singular is correct. ...
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append multiple values for one key in a dictionary [duplicate]

I am new to python and I have a list of years and values for each year. What I want to do is check if the year already exists in a dictionary and if it does, append the value to that list of values for the specific key. ...
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How to get a random value from dictionary in python

How can I get a random pair from a dict ? I'm making a game where you need to guess a capital of a country and I need questions to appear randomly. ...
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Understanding checked vs unchecked exceptions in Java

Joshua Bloch in " Effective Java " said that 21 Answers 21 ...
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What's wrong with using $_REQUEST[]?

I've seen a number of posts on here saying not to use the $_REQUEST variable. I usually don't, but sometimes it's convenient. What's wrong with it? ...
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How do I create a Java string from the contents of a file?

I've been using the idiom below for some time now. And it seems to be the most wide-spread, at least on the sites I've visited. ...
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A definitive guide to API-breaking changes in .NET

I would like to gather as much information as possible regarding API versioning in .NET/CLR, and specifically how API changes do or do not break client applications. First, let's define some terms: ...