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When to use generic methods and when to use wild-card?
...am pretty confused about the comparison when it says when to use wild-card and when to use generic methods.
Quoting from the document.
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Hibernate Error: org.hibernate.NonUniqueObjectException: a different object with the same identifier
I have two user Objects and while I try to save the object using
36 Answers
36
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How to prevent sticky hover effects for buttons on touch devices
I have created a carousel with a previous and a next button that are always visible. These buttons have a hover state, they turn blue. On touch devices, like iPad, the hover state is sticky, so the button stays blue after tapping it. I don't want that.
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“Keep Me Logged In” - the best approach
... uses sessions to store information about the user once they've logged in, and to maintain that information as they travel from page to page within the app. In this specific application, I'm storing the user_id , first_name and last_name of the person.
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How to change the ROOT application?
...r Tomcat webapps folder (rm -fr *). Then rename your WAR file to ROOT.war, and finally start your Tomcat from the bin directory (sh startup.sh).
Leave your war file in $CATALINA_BASE/webapps under its original name. Turn off
autoDeploy and deployOnStartup in your Host element in the server.xml file...
How to highlight cell if value duplicate in same column for google spreadsheet?
...A100).
Click Done
Anything written in the A1:A100 cells will be checked, and if there is a duplicate (occurs more than once) then it'll be coloured.
For locales using comma (,) as a decimal separator, the argument separator is most likely a semi-colon (;). That is, try: =countif(A:A;A1)>1, ins...
Different bash prompt for different vi editing mode?
...have a prompt that depends on the mode you are currently in (insert or command). How does one find out this editing mode?
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How do I copy to the clipboard in JavaScript?
...focused portion available in Chrome 66 (March 2018)
Access is asynchronous and uses JavaScript Promises, can be written so security user prompts (if displayed) don't interrupt the JavaScript in page.
Text can be copied to the clipboard directly from a variable.
Only supported on pages served over HT...
Undo a merge by pull request?
...though I could just break this down step-by-step.
You will need to fetch and checkout the latest upstream changes like so, e.g.:
git fetch upstream
git checkout upstream/master -b revert/john/foo_and_bar
Taking a look at the commit log, you should find something similar to this:
commit b76a5f...
C++, Free-Store vs Heap
...ce.
Do compilers make a distinction between the two terms? ( Free store and Heap , not new/malloc )
7 Answers
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