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How to generate a Dockerfile from an image?
Is it possible to generate a Dockerfile from an image? I want to know for two reasons:
8 Answers
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Should I instantiate instance variables on declaration or in the constructor?
... consistency very much, so following this "rule" is something I do all the time, and it makes it much easier to work with the code since you don't have to hunt around to find things.
Your mileage may vary.
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psql: FATAL: Ident authentication failed for user “postgres”
... If you set PGHOST=localhost you don't need to specify the -h option every time. This also works with other pg_* commands such as pg_dump.
– Sameer
Aug 31 '12 at 18:39
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How can I get a file's size in C? [duplicate]
How can I find out the size of a file I opened with an application written in C ?
I would like to know the size, because I want to put the content of the loaded file into a string, which I allocate using malloc() . Just writing malloc(10000*sizeof(char)); is IMHO a bad idea.
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How to access session variables from any class in ASP.NET?
...e, e.g like this:
public string Property1 { get; set; }
public DateTime MyDate { get; set; }
public int LoginId { get; set; }
}
This class stores one instance of itself in the ASP.NET session and allows you to access your session properties in a type-safe way from any class, e.g like t...
Complex CSS selector for parent of active child [duplicate]
...elector. I found css4-selectors.com to be a good reference on this. At the time of this comment, no browsers support this selector.
– Rob Hall
Jun 16 '17 at 1:36
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How to wait for a number of threads to complete?
...order the threads finish executing in, all you need to know is that by the time that second loop finishes executing, every thread will have completed.
A better approach is to use an ExecutorService and its associated methods:
List<Callable> callables = ... // assemble list of Callables here
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Get value from JToken that may not exist (best practices)
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Hopefully I can be a little more clear this time. Your method works great, and would accomplish exactly what I want. However, the greater context not explained in my question is that the particular code I'm working on is code that I want to be highly transferable. Whil...
How do I lowercase a string in Python?
Is there a way to convert a string from uppercase, or even part uppercase to lowercase?
5 Answers
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Is there a way to provide named parameters in a function call in JavaScript?
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This issue has been a pet peeve of mine for some time. I am a seasoned programmer with many languages under my belt. One of my favorite languages that I have had the pleasure to use is Python. Python supports named parameters without any trickery.... Since I started using P...