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java: Class.isInstance vs Class.isAssignableFrom
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@Gili This isn't what uckelman said. Please re-read his answer.
– Puce
Mar 3 '14 at 11:03
2
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Why sizeof int is wrong, while sizeof(int) is right?
...s part of the type or an arithmetic operator.
The existing grammar does already resolve the potential ambiguity of sizeof (int *) + 1. It is (sizeof(int*))+1, not sizeof((int*)(+1)).
C++ has a somewhat similar issue to resolve with function-style cast syntax. You can write int(0) and you can write...
Calculate MD5 checksum for a file
I'm using iTextSharp to read the text from a PDF file. However, there are times I cannot extract text, because the PDF file is only containing images. I download the same PDF files everyday, and I want to see if the PDF has been modified. If the text and modification date cannot be obtained, is a ...
How to POST JSON Data With PHP cURL?
...n if it were correct, you would not be able to test using print_r($_POST) (read why here). Instead, on your second page, you can nab the incoming request using file_get_contents("php://input"), which will contain the POSTed json. To view the received data in a more readable format, try this:
ech...
What is the maximum length of a valid email address?
...n included some gross errors that were corrected in the Errata. But nobody reads the errata so RFC 3693 ends up being very unhelpful, ironically.
– Dominic Sayers
Feb 12 '14 at 7:17
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Check with jquery if div has overflowing elements
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I read "You actually don't need any jQuery" and immediately went "duh, it's simple math."
– Michael J. Calkins
Mar 23 '13 at 0:50
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Restarting cron after changing crontab file?
... Job type reload is not applicable for unit cron.service. (Ubuntu 18.04). Read: Heads off, we all are pwned by the syndrome: "SystemD, there can be only one". If reload is not done automagically behind the scenes, you are bust! Do not even think about fixing it, like you did for the last 3 (or mo...
Initialize a byte array to a certain value, other than the default null? [duplicate]
...x20, 0x20 };
For larger arrays use a standard for loop. This is the most readable and efficient way to do it:
var sevenThousandItems = new byte[7000];
for (int i = 0; i < sevenThousandItems.Length; i++)
{
sevenThousandItems[i] = 0x20;
}
Of course, if you need to do this a lot then you co...
index.php not loading by default
...Webnet then you should consider changing Type and LoadModules to php so it read php [stackoverflow.com/questions/5121495/…
– Merey Nurlan
Dec 9 '19 at 1:02
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BIO与NIO、AIO的区别(这个容易理解) - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...、AIO
与NIO不同，当进行读写操作时，只须直接调用API的read或write方法即可。这两种方法均为异步的，对于读操作而言，当有流可读取时，操作系统会将可读的流传入read方法的缓冲区，并通知应用程序；对于写操作而言，当操作...