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JPA EntityManager: Why use persist() over merge()?
...n visualize the following diagram:
Or if you use the Hibernate specific API:
As illustrated by the above diagrams, an entity can be in one of the following four states:
New (Transient)
A newly created object that hasn’t ever been associated with a Hibernate Session (a.k.a Persistence Cont...
What does “async: false” do in jQuery.ajax()?
...n get_php_data() {
var php_data;
$.ajax({
url: "http://somesite/v1/api/get_php_data",
async: false,
//very important: else php_data will be returned even before we get Json from the url
dataType: 'json',
success: function (json) {
php_data = json;
}
});
return ...
Underscore vs Double underscore with variables and methods [duplicate]
...includes mangled names (as _class__variable). Concentrate on your code and API instead of trying to protect developers from themselves.
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Natural Sort Order in C#
... and use it as the comparison function in your IComparer:
[DllImport("shlwapi.dll", CharSet = CharSet.Unicode)]
private static extern int StrCmpLogicalW(string psz1, string psz2);
Michael Kaplan has some examples of how this function works here, and the changes that were made for Vista to make it...
Using jQuery to replace one tag with another
... short hand for creating new elements. More information can be found here: api.jquery.com/jQuery/#jQuery2. jQuery loops over all the elements and executes the function for each of them (same what .each is doing).
– Felix Kling
Aug 17 '11 at 13:33
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Calling Python in Java?
...
yes, this needs to define an api interface with minimum input/output required. It is not smart to have a lot of data transfter between client/server on the network. If you cannot define such an interface, then this design approach doesn't suits.
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How many parameters are too many? [closed]
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This is C and winapi. I can't think of a worse example.
– L̲̳o̲̳̳n̲̳̳g̲̳̳p̲̳o̲̳̳k̲̳̳e̲̳̳
Oct 13 '11 at 19:32
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Interface vs Abstract Class (general OO)
...rfaces.
Abstract base classes can be modified in v2+ without breaking the API. Changes to interfaces are breaking changes.
[C#/.NET Specific] Interfaces, unlike abstract base classes, can be applied to value types (structs). Structs cannot inherit from abstract base classes. This allows behavio...
Protecting executable from reverse engineering?
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Safe Net Sentinel (formerly Aladdin). Caveats though - their API sucks, documentation sucks, and both of those are great in comparison to their SDK tools.
I've used their hardware protection method (Sentinel HASP HL) for many years. It requires a proprietary USB key fob which acts as...
How to convert std::string to lower case?
...ode mechanics, like normalization, collation, ...)
While Boost looks nice, API wise, Boost.Locale is basically a wrapper around ICU. If Boost is compiled with ICU support... if it isn't, Boost.Locale is limited to the locale support compiled for the standard library.
And believe me, getting Boost to...