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How many threads can a Java VM support?
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Java 6 update 13, Ubuntu 8.10 32 Bit, 4Gig ram, Default JVM settings = 6318 Threads.
– Steve K
Apr 18 '09 at 17:32
9
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Convert an image (selected by path) to base64 string
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109
Get the byte array (byte[]) representation of the image, then use Convert.ToBase64String(), st...
How to check if a string “StartsWith” another string?
...ual measurements. On the browser I'm running currently (Chrome 12.0.742 on Windows) substring wins for success and prepared regex wins for failure.
– cobbal
Jul 14 '11 at 17:11
4
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Git status shows files as changed even though contents are the same
...blem has been solved:
That is easy: the first file has CRLF line-ends (windows), the second
LF (Unix). The file util (available in git\usr\bin) will show you that (file a b will reply
something like a: ASCII text, with CRLF line terminators b: ASCII
text)
Original answer below:
The di...
error opening HPROF file: IOException: Unknown HPROF Version
I am getting the following exception when trying to open HPROF file (created by Debug.dumpHprofData ) with Memory Analyzer:
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hidden symbol ... is referenced by DSO 剖析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...即可解决：
__attribute__ ((visibility("default")))
其实这个和Windows下的dll导出是类似的，dll中需要申明导出才能被外部正常链接上，因此dll中使用如下代码即可兼容Win/Linux平台的函数导出：
#ifdef WIN32
#ifdef XXX_EXPORTS
#define XXX_API...
How do I make a request using HTTP basic authentication with PHP curl?
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Unlike SOAP, REST isn't a standardized protocol so it's a bit difficult to have a "REST Client". However, since most RESTful services use HTTP as their underlying protocol, you should be able to use any HTTP library. In addition to cURL, PHP has these via PEAR:
HTTP_Request2
whic...
What is the difference between “int” and “uint” / “long” and “ulong”?
I know about int and long (32-bit and 64-bit numbers), but what are uint and ulong ?
5 Answers
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Why does this code segfault on 64-bit architecture but work fine on 32-bit?
... @user7: "we have a pointer p (of size 64) which is pointing to 32 bits of memory" - wrong. The address of the block allocated by malloc was returned according to the calling convention for a void*. But the calling code thinks the function returns int (since you opted not to tell it otherwis...
Ternary operator is twice as slow as an if-else block?
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X64 has several additional registers available, and each register is 64-bits. This allows the X64 JIT to perform the inner loop entirely using registers aside from loading i from the array, while the X86 JIT places several stack operations (memory access) in the loop.
value is a 64-bit integer, w...