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CSS center text (horizontally and vertically) inside a div block
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Using flexbox/CSS:
<div class="box">
<p>&#x0D05;</p>
</div>
The CSS:
.box{
display: flex;
justify-content: center;
align-items: center;
}
Taken from Quick Tip: The Simplest Way To Center Elements Vertically And Horizontally
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iPhone UITextField - Change placeholder text color
...olor blackColor];
textField.attributedPlaceholder = [[NSAttributedString alloc] initWithString:placeholderText attributes:@{NSForegroundColorAttributeName: color}];
} else {
NSLog(@"Cannot set placeholder text's color, because deployment target is earlier than iOS 6.0");
// TODO: Add fall-back...
Why is __init__() always called after __new__()?
...ost well-known OO languages, an expression like SomeClass(arg1, arg2) will allocate a new instance, initialise the instance's attributes, and then return it.
In most well-known OO languages, the "initialise the instance's attributes" part can be customised for each class by defining a constructor, ...
Increasing the timeout value in a WCF service
...:
http://social.msdn.microsoft.com/Forums/en-US/wcf/thread/84551e45-19a2-4d0d-bcc0-516a4041943d/
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Why isn't std::initializer_list a language built-in?
... @elmes: Actually it is more like std::array. But std::array allocates memory while std::initializaer_list wraps a compile-time array. Think of it as the difference between char s[] = "array"; and char *s = "initializer_list";.
– rodrigo
Mar 4 '13...
How to style UITextview to like Rounded Rect text field?
..., it will work if it's added in IB too
UITextView *textView = [[UITextView alloc] initWithFrame:CGRectMake(50, 220, 200, 100)];
//To make the border look very close to a UITextField
[textView.layer setBorderColor:[[[UIColor grayColor] colorWithAlphaComponent:0.5] CGColor]];
[textView.layer setBorde...
Red black tree over avl tree
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Programmers generally don't like to dynamically allocate memory.
The problem with the avl tree is that for "n" elements you need atleast log2(log2(n))...(height->log2(n)) bits to store the height of the tree!
So when you are handling enormous data you cannot be sure of ...
How to change UIPickerView height
... desired frame size at creation time, e.g:
smallerPicker = [[UIPickerView alloc] initWithFrame:CGRectMake(0.0, 0.0, 320.0, 120.0)];
You will discover that at various heights and widths, there are visual glitches. Obviously, these glitches would either need to be worked around somehow, or choose an...
Avoid trailing zeroes in printf()
...ssues that need debugging, left as an exercise for the reader):
printf("%.0d%.4g\n", (int)f/10, f-((int)f-(int)f%10));
It's slightly programmatic but at least it doesn't make you do any string manipulation.
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Could not reserve enough space for object heap
...machines with a lot of RAM, but with lower memory ulimits. Java decides to allocate a big heap because it detects the ram in the machine, but it's not allowed to allocate it because of ulimits.
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