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CORS - What is the motivation behind introducing preflight requests?

Cross-origin resource sharing is a mechanism that allows a web page to make XMLHttpRequests to another domain (from wikipedia ). ...
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Python: TypeError: cannot concatenate 'str' and 'int' objects [duplicate]

...ed by the last print statement. You can assign the result of the str(c) call to c as correctly shown by @jamylak and then concatenate all of the strings, or you can replace the last print simply with this: print "a + b as integers: ", c # note the comma here in which case str(c) isn't nece...
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In vim, how do I go back to where I was before a search?

... You really should read :help jumplist it explains all of this very well. share | improve this answer | fo...
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What makes a keychain item unique (in iOS)?

...the keychain access group (field kSecAttrAccessGroup) is an added field to all these primary keys. share | improve this answer | follow | ...
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BroadcastReceiver with multiple filters or multiple BroadcastReceivers?

... @Waqas Is there a way to do this dynamically so that you have a generic broadcast receiver and can add multiple handlers to it so as to not have to modify the basic framework each time you add a new intent to it? – gonzobrains ...
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Role-based access control (RBAC) vs. Claims-based access control (CBAC) in ASP.NET MVC

...ifferent role for those people who are in Marketing. So, you are forced to allow all marketing people to create Customers. you spotted another problem, anytime you decide that Marketing people should be allowed to create customers, you have to update all of your MVC Action methods Authorize attrib...
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How to see log files in MySQL?

I've read that Mysql server creates a log file where it keeps a record of all activities - like when and what queries execute. ...
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Xcode 6 Storyboard the wrong size?

...you to get used to size classes as they are the future, and you will eventually jump in anyway at some point." You probably haven't added the layout constraints. Select your label, tap the layout constraints button on the bottom: On that menu add width and height (it should NOT be the same as...
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How to detect escape key press with pure JS or jQuery?

...cated as of jQuery 3.0... you should use .off – freefaller Apr 24 '18 at 14:07  |  show 9 more comments ...
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python: how to send mail with TO, CC and BCC?

...ey thing is to add the recipients as a list of email ids in your sendmail call. import smtplib from email.mime.multipart import MIMEMultipart me = "user63503@gmail.com" to = "someone@gmail.com" cc = "anotherperson@gmail.com,someone@yahoo.com" bcc = "bccperson1@gmail.com,bccperson2@yahoo.com" rcpt...