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What is the difference between the GNU Makefile variable assignments =, ?=, := and +=?
Can anybody give a clear explanation of how variable assignment really works in Makefiles.
6 Answers
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How does Access-Control-Allow-Origin header work?
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Access-Control-Allow-Origin is a CORS (Cross-Origin Resource Sharing) header.
When Site A tries to fetch content from Site B, Site B can send an Access-Control-Allow-Origin response header to tell the browser that the content of this page...
Bootstrap Alert Auto Close
My need is to call alert when I click on Add to Wishlist button and should disappear the alert in 2 secs. This is how I tried, but the alert is disappearing instantly as soon as it is appearing. Not sure, where the bug is.. Can anyone help me out?
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What is the difference between ports 465 and 587?
...g SMTP protocol.
Port 465 is for smtps
SSL encryption is started automatically before any SMTP level communication.
Port 587 is for msa
It is almost like standard SMTP port.
MSA should accept email after authentication (e.g. after SMTP AUTH). It helps to stop outgoing spam when netmasters of DUL r...
Why does Eclipse complain about @Override on interface methods?
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You know, since I build manually anyway, I can just leave the source level at 1.6. I could not get any sort of mixed configuration working, and this seems simplest.
– Stefan Kendall
Jun 12 '09 at 18:32
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newline in [duplicate]
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This should really be voted up higher. No need to get a jQuery plugin. This plus some extra styling and positioning should be a fantastic option for anybody. I'm going to use it right now, working for a gigantor company that you all know.
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Using JQuery to check if no radio button in a group has been checked
...you could just change it to .val() == "" and remove the ! and you would be all set.
– Doug Neiner
Jan 15 '10 at 21:08
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How to dismiss notification after action has been clicked
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When you called notify on the notification manager you gave it an id - that is the unique id you can use to access it later (this is from the notification manager:
notify(int id, Notification notification)
To cancel, you would call:...
When would you use .git/info/exclude instead of .gitignore to exclude files?
...gnore rules, unlike .git/info/exclude.
So, .gitignore is available across all clones of the repository. Therefore, in large teams all people are ignoring the same kind of files Example *.db, *.log.
And you can have more specific ignore rules because of multiple .gitignore.
.git/info/exclude is av...
Transactions in .net
...in C# .Net 2.0. What are the classes that should be used? What are the pitfalls to look out for etc. All that commit and rollback stuff. I'm just starting a project where I might need to do some transactions while inserting data into the DB. Any responses or links for even basic stuff about transact...