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How to get the error message from the error code returned by GetLastError()?
... pointer? But passing it the pointer's address (pointer-to-a-pointer), but casting it to a regular pointer... Win32 weirdness. Thanks for the heads up, fixed it in my own code base (and my answer). Very subtle catch.
– Jamin Grey
Jan 11 '14 at 1:45
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How do short URLs services work?
...n the database, they find a description (sometimes), your name (sometimes) and the real URL. Then they issue a redirect, which is a HTTP 302 response and the target URL in the header.
This direct redirect is important. If you were to use files or first load HTML and then redirect, the browser would...
SQL Data Reader - handling Null column values
...sqlreader[indexAge] as int? ?? default(int);
The as operator handles the casting including the check for DBNull.
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How to use performSelector:withObject:afterDelay: with primitive types in Cocoa?
...trick if it is a BOOL parameter.
Pass nil for NO and self for YES. nil is cast to the BOOL value of NO. self is cast to the BOOL value of YES.
This approach breaks down if it is anything other than a BOOL parameter.
Assuming self is a UIView.
//nil will be cast to NO when the selector is perform...
Dokan虚拟磁盘开发实战 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
Dokan虚拟磁盘开发实战因工作需要，最近与同事合作使用Dokan开发了一个虚拟磁盘的简单程序，初步实现了远程目录映射到本地虚拟磁盘的功能。远程服务端是用Python...因工作需要，最近与同事合作使用Dokan开发了一个虚拟磁盘的...
Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=
...s not suffer of performance issues.
Using Option 1 and 2, aka the COLLATE cast approach, can lead to potential bottleneck, cause any index defined on the column will not be used causing a full scan.
Even though I did not try out Option 3, my hunch is that it will suffer the same consequences of op...
Is there a Python equivalent to Ruby's string interpolation?
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@Caste see here: docs.python.org/library/stdtypes.html#string-formatting and post a follow up comment if you need any more details
– mikej
Dec 15 '10 at 13:59
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Passing a single item as IEnumerable
...f you pass in a list or an array, then an unscrupulous piece of code could cast it and change the contents, leading to odd behaviour in some situations. You could use a read-only collection, but that's likely to involve even more wrapping. I think your solution is as neat as it gets.
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Cannot create an array of LinkedLists in Java…?
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For some reason you have to cast the type and make the declaration like this:
myMatrix = (LinkedList<IntegerNode>[]) new LinkedList<?>[numRows];
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What is a raw type and why shouldn't we use it?
... String name = (String) o;
System.out.println(name);
} // throws ClassCastException!
// java.lang.Boolean cannot be cast to java.lang.String
Now we run into trouble at run-time, because names contains something that isn't an instanceof String.
Presumably, if you want names to contain only...