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Unable to simultaneously satisfy constraints, will attempt to recover by breaking constraint

...the memory pointers are the same. So we know what is going on now. Additionally you can find NSLayoutConstraint in view hierarchy. Since it is selected in View, it selected in Navigator also. If you need you may also print it on console using address pointer: (lldb) po 0x17dce920 <UIView: 0x1...
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Showing line numbers in IPython/Jupyter Notebooks

...l line numbers. In more recent notebook versions Shift-L should toggle for all cells. If you can't remember the shortcut, bring up the command palette Ctrl-Shift+P (Cmd+Shift+P on Mac), and search for "line numbers"), it should allow to toggle and show you the shortcut. ...
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How do I specify local .gem files in my Gemfile?

I have a couple of gem files which I install via gem install xx.gem . Can I tell Bundler to use them? Or do I have to specify the source path? ...
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How to get the list of properties of a class?

How do I get a list of all the properties of a class? 10 Answers 10 ...
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Java logical operator short-circuiting

... In fact, to be really complete, all of &&, ||, & and | evaluate left to right. For a set of booleans b1, b2, ..., bn, the short circuit versions will cease evaluation when the first of these booleans is true (||) or false (&&a...
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Pointers in C: when to use the ampersand and the asterisk?

... work differently when you're working with arrays, strings or when you're calling functions with a pointer copy of a variable. It's difficult to see a pattern of logic inside all of this. ...
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Eclipse - debugger doesn't stop at breakpoint

...en released against 6u16, 6u18 and 7b1). The best bet is to use -XX:+UseParallelGC flag. Increasing the size of the minimum and maximum heap size, to delay the first GC, bring temporary relief. By the way, use this bug report in Eclipse to track how others have been faring. ...
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std::string to char*

... It won't automatically convert (thank god). You'll have to use the method c_str() to get the C string version. std::string str = "string"; const char *cstr = str.c_str(); Note that it returns a const char *; you aren't allowed to change the...
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Code First: Independent associations vs. Foreign key associations?

...ays generate entity references. If you don't want to use them you must manually modify the EDMX file and add properties representing FKs. At least this was the case in Entity Framework v1 where only Independent associations were allowed. Entity framework v4 offers a new type of association called F...
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Best way to stress test a website [duplicate]

...versation with our head QA guy about possibly deploying a "payload" app to all our user machines that could fire off a selenium test at a scheduled time. Or even better would be a bunch of virtual boxes that all hammer the site at once. – Josh Dec 4 '08 at 13:4...