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Two versions of python on linux. how to make 2.7 the default
...n in /usr/bin, and may have scripts that depend on this being present, and selected by #! /usr/bin/env python. You can usually get away with running Python 2.6 scripts in 2.7, but do you want to risk it?
On top of that, monkeying with /usr/bin can break your package manager's ability to manage pack...
Xcode debugging - displaying images
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Use Quick Look to inspect images in the Xcode debugger.
Select an NSImage or UIImage in the debugger, then click the Quick Look "eye" icon.
Like other areas of OS X, you can also use spacebar to Quick Look!
Quick Look in the debugger can also be implemented for your own classes:...
Optional Parameters with C++ Macros
... You could get a clear compilation error if you converted the selected argument which is supposed to be a MACRO name to string using # (the pound sign) and compared it's first n characters with the expected prefix and if there is no match, printed an informative error.
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Xcode Command /usr/bin/codesign failed with exit code 1 : errSecInternalComponent
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Open Keychain Access, then in the File menu select Lock All Keychains.
Then go back to Xcode and clean and rebuild. It will prompt you for your password again to unlock the keychain.
After this, assuming you have no other compile issues, it will succeed!
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Get Android API level of phone currently running my application [duplicate]
... is an integer.
In either case, the integer you get maps to an enum value from all those defined in android.os.Build.VERSION_CODES:
SDK_INT value Build.VERSION_CODES Human Version Name
1 BASE Android 1.0 (no codename)
2 ...
What are some resources for getting started in operating system development? [closed]
...w to create alternative OSs. There are likely books that are out of print from this era as well. You might be able to get the same information for free by looking up the indexes of those magazines (which are available on that site - click "index" near the magazine name) and then asking around for ...
What's the difference between disabled=“disabled” and readonly=“readonly” for HTML form input fields
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Not all form elements have a readonly attribute. Most notable, the <SELECT> , <OPTION> , and <BUTTON> elements do not have readonly
attributes (although they both have disabled attributes)
Browsers provide no default overridden visual feedback that the form element is read ...
How do you access a website running on localhost from iPhone browser
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Go to the "Info" tab
Click on the drop down menu that says "Wi-Fi" and select "iPhone USB" as shown in the photo.
You'll find an IP address like "xxx.xxx.xx.xx" or similar. Open Safari browser on your iPhone and enter IP_address:port_number
Example: 169.254.72.86:3000
[NOTE: If the IP addr...
Python module os.chmod(file, 664) does not change the permission to rw-rw-r— but -w--wx----
... ignored.
chmod +x is demonstrated at: How do you do a simple "chmod +x" from within python?
Tested in Ubuntu 16.04, Python 3.5.2.
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Automatically remove Subversion unversioned files
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Downvote: The other solution from bellow svn cleanup --remove-unversioned is better. And it is for Subversion 1.9.0 (this version is from 2015). It is stable and standar.
– tres.14159
Nov 21 '18 at 8:19
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