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Null or default comparison of generic argument in C#
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To avoid boxing, the best way to compare generics for equality is with EqualityComparer<T>.Default. This respects IEquatable<T> (without boxing) as well as object.Equals, and handles all the Nullable<T> "lifted" nuances. Hence:
if(EqualityComparer<T>.Default....
Is there a good charting library for iPhone? [closed]
... later) in an iPhone app I'm working on. I've done some looking around and it doesn't look like there are any really good, mature charting libraries for iPhone yet. I've also looked for something written for Cocoa on the Mac that can be adapted, but haven't found anything great yet.
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How can I exclude one word with grep?
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You can do it using -v (for --invert-match) option of grep as:
grep -v "unwanted_word" file | grep XXXXXXXX
grep -v "unwanted_word" file will filter the lines that have the unwanted_word and grep XXXXXXXX will list only lines with pa...
Getting “net::ERR_BLOCKED_BY_CLIENT” error on some AJAX calls
... in this case).
Having rules and expressions that just operate on a tiny bit of text (the URI) is prone to create some false-positives...
Besides instructing your users to disable their extensions (at least on your site) you can also get the extension and test which of the rules/expressions blocke...
PhoneGap Eclipse Issue - eglCodecCommon glUtilsParamSize: unknow param errors
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This is caused if you use the "Use host GPU" setting of the emulator and it will disappear after you uncheck this option. If you still need "Use host GPU", you can just filter out the errors by customizing the Logcat Filter. Enter ^(?!eglCodecCommon) into the "by Log Tag (regex)" field in order to...
What are the rules for evaluation order in Java?
...e:
Order of evaluation of subexpressions is independent of both associativity and precedence. Associativity and precedence determine in what order the operators are executed but do not determine in what order the subexpressions are evaluated. Your question is about the order in which subexpressions...
How can I detect if a file is binary (non-text) in python?
...imetypes module:
import mimetypes
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mime = mimetypes.guess_type(file)
It's fairly easy to compile a list of binary mime types. For example Apache distributes with a mime.types file that you could parse into a set of lists, binary and text and then check to see if the mime is in your text or bin...
How do I test if a variable is a number in Bash?
...[ $yournumber =~ $re ]] ; then
echo "error: Not a number" >&2; exit 1
fi
If the value is not necessarily an integer, consider amending the regex appropriately; for instance:
^[0-9]+([.][0-9]+)?$
...or, to handle numbers with a sign:
^[+-]?[0-9]+([.][0-9]+)?$
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How to dynamically create CSS class in JavaScript and apply?
...need to create a CSS stylesheet class dynamically in JavaScript and assign it to some HTML elements like - div, table, span, tr, etc and to some controls like asp:Textbox, Dropdownlist and datalist.
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Fixing slow initial load for IIS
IIS has an annoying feature for low traffic websites where it recycles unused worker processes, causing the first user to the site after some time to get an extremely long delay (30+ seconds).
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