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I am very happy with the spring-boot project so far, but I'd like to develop a deeper understanding, of how everything is glued together. Using spring-boot-starter-web, spring-boot-starter-data-jpa and hateoas I was able to assemble a nice working REST backend. But I am wondering, how it is done, that e.g. a DataIntegrityViolation is converted nicely into a JSON output like this. I actually like the info being provided, but I wonder, how I could reuse the DataObject being converted to JSON. I just do not understand, where it comes from and where it is configure. Hope you folks can help me out

This question already has an answer here: Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash.new([]) 4 answers Ok, so I wanted to create a hash which has an empty hash as the default value. A bit weird, I know, but let's say that I thought it might be useful. So here's what I did: >> a = Hash.new({}) => {} >> a[:a][:b] = 5 => 5 >> a => {} >> a[:a] => {:b=>5} >> a.keys => [] >> a.size => 0 >> a[:a].size => 1 In other words, I don't see hash member when I inspect the hash, but I can access it by its key. Is this expected behavior? What is going

I'm still relatively new to C++ and I can't seem to figure out the difference in the following two ways of coding a function that may take one parameter or maybe two or three or more. Anyway, here's my point function overload: int aClass::doSomething(int required) { //DO SOMETHING } int aClass::doSomething(int required, int optional) { //DO SOMETHING } how is this different to, default value: int aClass::doSomething(int required, int optional = 0) { //DO SOMETHING } I know in different circumstances one may be more suitable than another but what kinds of things should I be aware of when

When a web form is written to the browser, the browsers remembers what the initial values are of a text INPUT box. ie. when it receives HTML like this: <input type="text" value="something"> The browser remembers "something" as the initial/default value. When the user starts typing over it, then hits ESC, the browser reverts the field to the initial value (or blank if it was initially blank of course). However, when creating a text input box programatically, hitting ESC always seems to blank the box, even if I create it with a default value like so: $('<input type="text" value="something">')

I like c#, but why can I do : public static bool Initialized { private set; get; } or this : public static bool Initialized = false; but not a mix of both in one line ? I just need to set access level to my variable (private set), and I need it set at false on startup. I wouldn't like to make that boring private _Initialized variable, which would be returned by the getter of the public Initialized var. I like my code to be beautiful. (NB: my variable is static, it can't be initialized in the constructor). Thanks Corey Sunwold You could use a static constructor static MyClass() { Initialized =

I want to set date as default value for date in mysql (not timestamp), but the following error appear ALTER TABLE `RMS`.`transactionentry` CHANGE `Date` `Date` DATE DEFAULT NOW() NOT NULL Error Invalid default value for 'Date' Same Case alter table `RMS`.`transactionentry` change `Date` `Date` date default 'CURRENT_DATE' NOT NULL alter table `RMS`.`transactionentry` change `Date` `Date` date default current_timestamp NOT NULL Updated: I don't think you can achieve that with mysql date . You have to use timestamp or try this approach.. CREATE TRIGGER transactionentry_OnInsert BEFORE INSERT ON

We all have been easily able to do this prior to Windows 8 (in XP/VISTA/WIN7) with few changes in Registry and it was done. With Windows 8 it's not that easy (I'm yet to figure it out how). Windows 8 too has few registry settings to be changed mentioned below, but along with this it also stores a unique Hash for every computer. Can any body help me to possibly create this hash for every computer or with some API provided by Microsoft to set default browser ('SetAppAsDefaultAll' does not work). Following are the registry entries. Computer\HKEY_CURRENT_USER\Software\Microsoft\Windows

How do you change the default font type and font size in TinyMCE? I'm using the advanced skin and I've changed the body, td, pre style in default/content.css but it still doesn't change. Well, there are several content.css and only one is used to style your editor depending on your configuration settings . You should use the content_css configuration option and name an own css file where you can overwrite the editors defaults (the content.css you were recently looking for). In your init function use something like content_css: "http://localhost/css/my_tiny_styles.css", and in my_tiny_styles

When I set a default value formula for a date parameter in SSRS, such as: =CDate(”01/” & Month(Now) & “/” & Year(Now)) or even: =Now the date parameter control becomes disabled with nothing in it. Does anyone know what simple thing (I am sure) I am doing wrong? After playing some more, I realized that the date controls became enabled when I picked a value from a preceding dropdown parameter that did not have a default. Apparently, controls after non-default parameters are disabled until you pick something, so order matters. From an MDSN article: "parameter order is important when you want to