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In Objective-C why should I check if self = [super init] is not nil?
...the return value from [super init] is nil and you check it, as recommended by standard practices, and then return prematurely if nil, basically your app is still not going to work correctly.
If you think about it, even though that if (self != nil) check is there, for proper operation of your class,...
How to get current memory usage in android?
...double)mi.totalMem * 100.0;
Explanation of the number 0x100000L
1024 bytes == 1 Kibibyte
1024 Kibibyte == 1 Mebibyte
1024 * 1024 == 1048576
1048576 == 0x100000
It's quite obvious that the number is used to convert from bytes to mebibyte
P.S: we need to calculate total m...
How to apply unmerged upstream pull requests from other forks into my fork?
... Instead, I selected the branch that corresponded to the pull request made by OtherFork, from the right hand 'compare' dropdown. I then selected the left side as the base fork as described above as was able to create the pull request.
– seddonym
Dec 30 '15 at ...
Dynamically load a JavaScript file
...ript tag to the head as suggested before
var head = document.getElementsByTagName('head')[0];
var script = document.createElement('script');
script.type = 'text/javascript';
script.src = url;
// then bind the event to the callback function
// there are several events for cross br...
Do I have to guard against SQL injection if I used a dropdown?
...
How cute! It's little Bobby Tables!
– Aura
May 22 '14 at 18:26
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How can I make a WPF combo box have the width of its widest element in XAML?
...s you can force a Measure operation in the layout system (which you can do by adding a second control), I don't think it can be done.
As always, I'm open to an short, elegant solution -- but in this case a code-behind or dual-control/ControlTemplate hacks are the only solutions I have seen.
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“unpacking” a tuple to call a matching function pointer
... @NirFriedman: Sure, just replace the unspecialized version of gens by: template <int N, int... S> struct gens { typedef typename gens<N-1, N-1, S...>::type type; };
– marton78
Apr 16 '15 at 14:11
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How to detect page zoom level in all modern browsers?
... in terms of device pixels (instead of relative to default zoom), multiply by window.devicePixelRatio.
Old WebKit? (unverified): parseInt(getComputedStyle(document.documentElement,null).width) / document.documentElement.clientWidth (from this answer)
Opera: document.documentElement.offsetWidth / wid...
What is a regular expression which will match a valid domain name without a subdomain?
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@GaneshBabu What do you mean by exact matches?
– Yaroslav Stavnichiy
Dec 15 '16 at 11:16
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Sending email through Gmail SMTP server with C#
...gle)
Make sure you don't have to enter a captcha code first. You can do so by sending a test email from your browser.
Make changes in web.config (or app.config, I haven't tried that yet but I assume it's just as easy to make it work in a windows application):
<configuration>
<appSe...