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Proper usage of Java -D command-line parameters
...es there (and also allows spaces this way), I use this all the day for ant-calls.
– Paŭlo Ebermann
Feb 18 '11 at 22:03
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What is the exact meaning of IFS=$'\n'?
...st to give the construct its official name: strings of the form $'...' are called ANSI C-quoted strings.
That is, as in [ANSI] C strings, backlash escape sequences are recognized and expanded to their literal equivalent (see below for the complete list of supported escape sequences).
After this ex...
Git's famous “ERROR: Permission to .git denied to user”
...thub.com/en/articles/connecting-to-github-with-ssh and various, various guides. I am unable to git push -u origin master or git push origin master ( the same command ).
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How to convert a ruby hash object to JSON?
...s the possibility to extend existing classes with your own methods. That's called "class reopening" or monkey-patching (the meaning of the latter can vary, though).
So, take a look here:
car = {:make => "bmw", :year => "2003"}
# => {:make=>"bmw", :year=>"2003"}
car.to_json
# NoMetho...
Docker: adding a file from a parent directory
...y problem because my onbuild image looks for a file in a folder and had to call like this:
-f foo/bar/Dockerfile foo/bar
instead of
-f foo/bar/Dockerfile .
Also note that this is only solution for some cases as -f flag
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How to change highlighted occurrences color in Eclipse's sidebar?
...
The bar is called the Overview Bar or Overview Ruler (in case you need to reference it) and, as has been mentioned, the color of occurences can be changed by navigating to:
Window > Preferences > General > Editors > Text Ed...
@Basic(optional = false) vs @Column(nullable = false) in JPA
...in actual usage (at least for a String field). (e.g. entityManager.persist calls).
So I went to the specification and read up about it.
Here is what the spec has to say:
http://download.oracle.com/otndocs/jcp/persistence-2.0-fr-oth-JSpec/
Basic(optional): Whether the value of the field or prope...
How do I search within an array of hashes by hash values in ruby?
...
You're looking for Enumerable#select (also called find_all):
@fathers.select {|father| father["age"] > 35 }
# => [ { "age" => 40, "father" => "Bob" },
# { "age" => 50, "father" => "Batman" } ]
Per the documentation, it "returns an array conta...
ModelState.AddModelError - How can I add an error that isn't for a property?
... to the Model in general, rather than one of it's properties, as usual you call:
ModelState.AddModelError(string key, string errorMessage);
but use an empty string for the key:
ModelState.AddModelError(string.Empty, "There is something wrong with Foo.");
The error message will present itself ...
Visual Studio Disabling Missing XML Comment Warning
...ut adding comments that are simply longer versions of the method names and calling it documentation is just visual clutter.
– HiredMind
Jan 9 '13 at 6:13
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