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What is the 'dynamic' type in C# 4.0 used for?
...is being able to reuse variables for different types of data. I'm sure the Python, Ruby, and Perl programmers out there can think of a million ways to take advantage of this, but I've been using C# so long that it just feels "wrong" to me.
dynamic foo = 123;
foo = "bar";
OK, so you most likely wi...
Detect if a NumPy array contains at least one non-numeric value?
... Why doesn't something like float('nan') in x not work? I tried it and python returns False where x = [1,2,3,float('nan')].
– Charlie Parker
Oct 13 '16 at 22:02
1
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Set Django IntegerField by choices=… name
...es
super(models.IntegerField, self).__init__(**kwargs)
def to_python(self, value):
return self.val2choice[value]
def get_db_prep_value(self, choice):
return self.choice2val[choice]
share
...
Extracting text OpenCV
...
Hi, how do i achieve the same outcome with python cv2?
– dnth
Oct 28 '15 at 9:19
3
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Regex: match everything but specific pattern
...ny languages, use \A to define the unambiguous start of string, and \z (in Python, it is \Z, in JavaScript, $ is OK) to define the very end of the string.
Dot note: In many flavors (but not POSIX, TRE, TCL), . matches any char but a newline char. Make sure you use a corresponding DOTALL modifier (/s...
An operation on a socket could not be performed because the system lac...
...注册表项:
值的名称: MaxUserPort
值类型: 双字节
值数据: 65534
有效范围: 5000-65534 (十进制)
默认值: 0x1388 (5000 十进制)
说明: 此参数控制的程序从系统请求任何可用的用户端口时所使用的最大端口号。通常情况下...
An operation on a socket could not be performed because the system lac...
...注册表项:
值的名称: MaxUserPort
值类型: 双字节
值数据: 65534
有效范围: 5000-65534 (十进制)
默认值: 0x1388 (5000 十进制)
说明: 此参数控制的程序从系统请求任何可用的用户端口时所使用的最大端口号。通常情况下...
An operation on a socket could not be performed because the system lac...
...注册表项:
值的名称: MaxUserPort
值类型: 双字节
值数据: 65534
有效范围: 5000-65534 (十进制)
默认值: 0x1388 (5000 十进制)
说明: 此参数控制的程序从系统请求任何可用的用户端口时所使用的最大端口号。通常情况下...
“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
...的私钥和加密密码,登录cookie,以及其他HTTPS传输的机密数据(比如账号、密码)。
约翰·霍普金斯大学-信息安全研究所的研究助理教授,在博客里总结了关于FREAK漏洞相关情况,并给我们展示了黑客如何借此施展中间人攻击:...
2014年腾讯代码报告—累计代码行14亿 - 创意 - 清泛网 - 专注C/C++及内核技术
...、电子科技大学。
PDF版下载点此查看。
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