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Objective-C implicit conversion loses integer precision 'NSUInteger' (aka 'unsigned long') to 'int'
...
The count method of NSArray returns an NSUInteger, and on the 64-bit OS X platform
NSUInteger is defined as unsigned long, and
unsigned long is a 64-bit unsigned integer.
int is a 32-bit integer.
So int is a "smaller" datatype than NSUInteger, therefore the compiler warning.
See al...
C/C++ NaN constant (literal)?
...-sequence)",0) counterparts and NAN for assignments.
// Sample C code
uint64_t u64;
double x;
x = nan("0x12345");
memcpy(&u64, &x, sizeof u64); printf("(%" PRIx64 ")\n", u64);
x = -strtod("NAN(6789A)",0);
memcpy(&u64, &x, sizeof u64); printf("(%" PRIx64 ")\n", u64);
x = NAN;
memcpy(...
Unable to load config info from /usr/local/ssl/openssl.cnf on Windows
...
Or C:\OpenSSL-Win64\bin\openssl.cfg in 64bits systems
– borjab
Nov 13 '14 at 9:59
13
...
Compression/Decompression string with C#
...], while Unzip returns a string. If you want a string from Zip you can Base64 encode it (for example by using Convert.ToBase64String(r1)) (the result of Zip is VERY binary! It isn't something you can print to the screen or write directly in an XML)
The version suggested is for .NET 2.0, for .NET 4....
When is assembly faster than C?
...les that still need compiler-specific code, see
Getting the high part of 64 bit integer multiplication: A portable version using uint64_t for 32x32 => 64-bit multiplies fails to optimize on a 64-bit CPU, so you need intrinsics or __int128 for efficient code on 64-bit systems.
_umul128 on Windo...
Assign pandas dataframe column dtypes
...-05-01
1 b 2 2018-05-02
df.dtypes
x object
y int64
z datetime64[ns]
dtype: object
and confirm the dtype is updated.
OLD/DEPRECATED ANSWER for pandas 0.12 - 0.16: You can use convert_objects to infer better dtypes:
In [21]: df
Out[21]:
x y
0 a 1
1 b 2
In ...
How to multiply duration by integer?
... leave implicit numeric conversion out. After looking back on this that int64(...) * Duration makes much more sense than casting to Duration, which is just a basic violation of how units should work. Sadly that doesn't work. You really have to do Duration * Duration which is horrible.
...
Android adb not found
...e containing adb used to be 32bit. It worked fine on 32bit systems. But on 64bit systems you need to manually install the IA32 library.
For Debian based distributions try this:
sudo apt-get install libc6-i386 lib32stdc++6 lib32gcc1 lib32ncurses5
But since v24.0 platform-tools contains only 64bit...
Cross compile Go on OSX?
... make says: # Building compilers and Go bootstrap tool for host, darwin/amd64 but later on it actually ends up as: --- Installed Go for windows/386 in /usr/local/go Installed commands in /usr/local/go/bin so one shall observe ending rather than beginning of compiling the compiler.
...
“历史遗留”漏洞：浅析新型SSL/TLS漏洞FREAK - 创意 - 清泛网 - 专注C/C++及内核技术
...本且包含漏洞的加密方式，包括美国的出口级密钥——512位的RSA密钥。
FREAK漏洞是由法国国家信息与自动化研究所(Inria)和微软的研究人员共同发现的。为此，他们曾研究了OpenSSL v1.01k及之前的协议版本，以及苹果的安全传输机...