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Missing file warnings showing up after upgrade to Xcode 4

I recently upgraded to Xcode 4 (which is a great upgrade) but now I'm getting some warnings that I did not get before. I have looked through forums and other SO posts but have not come across how to fix this. ...
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Is it a good idea to index datetime field in mysql?

...it in conditions frequently in queries. If your only condition is BETWEEN NOW() AND DATE_ADD(NOW(), INTERVAL 30 DAY) and you have no other index in the condition, MySQL will have to do a full table scan on every query. I'm not sure how many rows are generated in 30 days, but as long as it's less t...
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Why git can't do hard/soft resets by path?

...set the index and the working tree to HEAD. I think it should be clear by now why this operation is not for specific files by its nature - it is intended to move a branch head in the first place, resetting the working tree and the index is secondary functionality. ...
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Font from origin has been blocked from loading by Cross-Origin Resource Sharing policy

... This is happening in Chrome now. – justingordon Sep 23 '14 at 6:34 As p...
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Should I put the Google Analytics JS in the or at the end of ?

...update to this: rather than at the end of <head>, the page linked-to now says "Add the tag right after the opening <head> tag on each page." – Brandon Aug 2 '19 at 15:47 ...
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Inserting image into IPython notebook markdown

...IPython 2.0, the files/ prefix is no longer needed (cf. release notes). So now the solution <img src="image.png"> simply works as expected. share | improve this answer | ...
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jQuery append() vs appendChild()

... Do you know why append is "safe" and appendChild is not? What does domManip do? – Rob Fox Mar 17 '14 at 8:29 2 ...
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How does Go compile so quickly?

...in a really fast compiler working on 286-class hardware. I think that even now, modern Pascal compilers (e.g. FreePascal) are faster than Go compilers. share | improve this answer | ...
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How to check status of PostgreSQL server Mac OS X

...o get them to take effect, remember to source it like so: $ . ~/.bashrc Now, try it and you should get something like this: $ show-pg-status pg_ctl: server is running (PID: 11030) /usr/local/Cellar/postgresql/9.2.4/bin/postgres ...
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How do I get into a non-password protected Java keystore or change the password?

... Lion (based on comments and another answer here), the password for Mac is now also "changeit", probably because Oracle is now handling distribution for the Mac JVM as well. share | improve this ans...