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Rounded UIView using CALayers - only some corners - How?

... CGRect rect = CGRectMake(10, 10, 200, 100); MyView *myView = [[MyView alloc] initWithFrame:rect]; [self.view addSubview:myView]; [super viewDidLoad]; } MyView is just a UIImageView subclass: @interface MyView : UIImageView { } I'd never used graphics contexts before, but I managed ...
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Pointers vs. values in parameters and return values

... function values, and interface values are implemented with pointers internally, and a pointer to them is often redundant. Elsewhere, use pointers for big structs or structs you'll have to change, and otherwise pass values, because getting things changed by surprise via a pointer is confusing. O...
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What is more efficient? Using pow to square or just multiply it with itself?

... I tested the performance difference between x*x*... vs pow(x,i) for small i using this code: #include <cstdlib> #include <cmath> #include <boost/date_time/posix_time/posix_time.hpp> inline boost::posix_time::ptime now() { return boost::posix_time::microsec_clock::local_t...
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How can I replace every occurrence of a String in a file with PowerShell?

Using PowerShell, I want to replace all exact occurrences of [MYID] in a given file with MyValue . What is the easiest way to do so? ...
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Django - How to rename a model field using South?

... You can use the db.rename_column function. class Migration: def forwards(self, orm): # Rename 'name' field to 'full_name' db.rename_column('app_foo', 'name', 'full_name') def backwards(self, orm): # Rename 'full_...
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Can I change the checkbox size using CSS?

...ers no solutions in many cases (no solution to firefox on xp? no chrome at all?), is outdated and only contains a link and a comment of not much value. – nurettin Feb 13 '13 at 15:34 ...
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Reference - What does this error mean in PHP?

...m. (Note: You might have multiple blocks if you had code that was automatically constructed) Also make sure you don't have any Byte Order Marks in your code, for example when the encoding of the script is UTF-8 with BOM. Related Questions: Headers already sent by PHP All PHP "Headers already sen...
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Can linux cat command be used for writing text to file?

...swered May 2 '15 at 16:36 stolen_leavesstolen_leaves 1,05799 silver badges1818 bronze badges ...
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How to delete multiple values from a vector?

...ude it for the sake of readability. This is, btw., what setdiff does internally (but without the unique to throw away duplicates in a which are not in remove). If remove contains incomparables, you'll have to check for them individually, e.g. if (any (is.na (remove))) a <- a [! is.na (a)] (...
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Pip freeze vs. pip list

...you are using a virtualenv, you can specify a requirements.txt file to install all the dependencies. A typical usage: $ pip install -r requirements.txt The packages need to be in a specific format for pip to understand, which is feedparser==5.1.3 wsgiref==0.1.2 django==1.4.2 ... That is the ...