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When to use EntityManager.find() vs EntityManager.getReference() with JPA
... EntityManager.find() method?
EntityManager.getReference() is really an error prone method and there is really very few cases where a client code needs to use it.
Personally, I never needed to use it.
EntityManager.getReference() and EntityManager.find() : no difference in terms of overhead
...
How can I view all the git repositories on my machine?
...ll from Windows Powershell:
Get-ChildItem . -Attributes Directory+Hidden -ErrorAction SilentlyContinue -Include ".git" -Recurse
EDIT #1: -Filter is twice as fast as -Include. Here is that solution:
Get-ChildItem . -Attributes Directory+Hidden -ErrorAction SilentlyContinue -Filter ".git" -Recur...
Get the height and width of the browser viewport without scrollbars using jquery?
...ocument).ready(function() {
if(typeof $=='undefined') {
alert("Error, you haven't called JQuery library");
}
if(document.doctype==null || screen.height < parseInt($(window).height()) ) {
alert("ERROR, check your do
How to test equality of Swift enums with associated values
... I would strongly suggest simple approach, like:
if case .NotRecognized = error {
// Success
} else {
XCTFail("wrong error")
}
... or in case of parameter evaluation:
if case .Unauthorized401(_, let response, _) = networkError {
XCTAssertEqual(response.statusCode, 401)
} else {
X...
Make Vim show ALL white spaces as a character
...
I tried this and got an error at first. It turned out that "space" was not a valid option in the slightly older version of gvim I was using. Upgrading my gvim solved my problem. For others that are getting an error, type :help listchars to check whe...
How to set up a Subversion (SVN) server on GNU/Linux - Ubuntu [closed]
.../localhost/svn/$REPOS
Following these steps (assuming I haven't made any error copy/pasting), I had a working SVN repository on my laptop.
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Is there a git-merge --dry-run option?
...e a patch file, you can then test it with --check and see if there are any errors, then remove the patch file.
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Seeing escape characters when pressing the arrow keys in python shell
...g fixed.
While I try to import readline in problem python shell, get this error message:
ImportError: dlopen(/Users/raptor/.virtualenvs/bottle/lib/python2.7/lib-dynload/readline.so, 2): Library not loaded: /usr/local/opt/readline/lib/libreadline.6.dylib
Referenced from: /Users/raptor/.virtualenvs/...
How to get progress from XMLHttpRequest
...he transfer is complete.");}
function transfer_failed(e){console.log("An error occurred while transferring the file.");}
function transfer_canceled(e){console.log("The transfer has been canceled by the user.");}
function get_post_ajax()
{
var xhttp;
if (window.XMLHttpRequest){xhttp...
Does .NET provide an easy way convert bytes to KB, MB, GB, etc.?
...loating point division so there should be much less concern about rounding errors.
– JLRishe
Mar 11 '14 at 6:57
Thank ...