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How to refer environment variable in POM.xml?
...ely describe your project so please use environment variables judiciously. If you make your builds dependent on your environment, they are harder to reproduce
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Why does Go have a “goto” statement
... the math/gamma.go file, the goto statement is used:
for x < 0 {
if x > -1e-09 {
goto small
}
z = z / x
x = x + 1
}
for x < 2 {
if x < 1e-09 {
goto small
}
z = z / x
x = x + 1
}
if x == 2 {
return z
}
x = x - 2
p = (((((x...
Alter Table Add Column Syntax
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To clarify, the 'COLUMN' keyword is only valid (but not required) in MySQL.
– ethanbustad
Feb 12 '15 at 21:28
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Python subprocess/Popen with a modified environment
I believe that running an external command with a slightly modified environment is a very common case. That's how I tend to do it:
...
How to create a .NET DateTime from ISO 8601 format
...o be able to parse only a limited subset of it. Especially it is a problem if the string contains time zone specification. (Neither it does for basic ISO8601 formats, or reduced precision formats - however this is not exactly your case.) That is why I make use of custom format strings when it comes ...
How can I define a composite primary key in SQL?
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Just for clarification: a table can have at most one primary key. A primary key consists of one or more columns (from that table). If a primary key consists of two or more columns it is called a composite primary key. It is defined as fol...
Why use a prime number in hashCode?
...hogonal prime factorizations.
Suppose there are 8 buckets to insert into. If the number you are using to multiply by is some multiple of 8, then the bucket inserted into will only be determined by the least significant entry (the one not multiplied at all). Similar entries will collide. Not good fo...
Creating threads - Task.Factory.StartNew vs new Thread()
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There is a big difference. Tasks are scheduled on the ThreadPool and could even be executed synchronous if appropiate.
If you have a long running background work you should specify this by using the correct Task Option.
You should prefer T...
How to send a stacktrace to log4j?
...tion and get the following on the standard output (like, say, the console) if you do a e.printStackTrace() :
11 Answers
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Inline instantiation of a constant List
...ng>, ReadOnlyCollection<string> or something else is up to you... if you expect that it should only be treated as a sequence, then IEnumerable<string> would probably be most appropriate. If the order matters and you want people to be able to access it by index, IList<T> may be a...