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What is the theoretical maximum number of open TCP connections that a modern Linux box can have
...ening port can accept more than one connection simultaneously.
There is a '64K' limit that is often cited, but that is per client per server port, and needs clarifying.
Each TCP/IP packet has basically four fields for addressing. These are:
source_ip source_port destination_ip destination_port
< ...
How can I obfuscate (protect) JavaScript? [closed]
..., but also a lot of work which may be unnecessary. You could probably base64 encode some string values, and that would be easier.. but someone who really wanted those string values could easily decode them. Encryption is the only way to truly prevent anyone from accessing your data, and most peopl...
How To Test if Type is Primitive
...t 3: IsPrimitive = (Boolean, Byte, SByte, Int16, UInt16, Int32, UInt32, Int64, UInt64, IntPtr, UIntPtr, Char, Double, and Single),
Anther Primitive-Like type to check (t == typeof(DateTime))
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Configure WAMP server to send email
...example in the devside guide uses forwardslashes.
sendmail_path = "C:\wamp64\msmtp\msmtp.exe -d -C C:\wamp64\msmtp\msmtprc.ini -t --read-envelope-from"
mail.log = "C:\wamp64\msmtp\maillog.txt"
Create and edit the file msmtprc.ini in the same directory as your msmtp.exe file as follows, replacing...
Convert floats to ints in Pandas?
...>> cols = ['A', 'B']
>>> df[cols] = df[cols].applymap(np.int64)
>>> print(df)
... A B C D
... 0 8 0 1.916283 6.226750
... 1 1 9 9.277504 8.522808
... 2 1 4 2.700118 7.739108
Or for a single column with apply():
>>> df['C'] = df['C']...
What does `dword ptr` mean?
...
unwindunwind
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CREATE TABLE IF NOT EXISTS equivalent in SQL Server [duplicate]
...re name='cars' and xtype='U')
create table cars (
Name varchar(64) not null
)
go
The above will create a table called cars if the table does not already exist.
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Installed Ruby 1.9.3 with RVM but command line doesn't show ruby -v
...
> ruby -v
ruby 2.0.0p481
> rvm list
rvm rubies
ruby-2.1.2 [ x86_64 ]
=* ruby-2.2.1 [ x86_64 ]
ruby-2.2.3 [ x86_64 ]
Also, rvm current failed.
> rvm current
Warning! PATH is not properly set up, '/Users/randallreed/.rvm/gems/ruby-2.2.1/bin' is not at first place...
The error mes...
MFC 获取当前时间的几种方法总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...tm_minute = curTime.wMinute;
tmTime.tm_second = curTime.wSecond;
__time64_t curTime_64t = _mktime64(&tmTime);
struct tm st;
st.tm_year = atoi(strTime.substr(0, 4).c_str())-1900;
st.tm_mon = atoi(strTime.substr(5, 2).c_str());
st.tm_mday = atoi(strTime.substr(8, 2).c_str());
st.tm_hour = a...
解决IIS发布时global_asax的dll 的CS0433冲突问题 - 更多技术 - 清泛网 - ...
...e type 'ASP.global_asax' exists in both 'c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\925f9bdc\bb48a68c\App_global.asax.eptr0taj.dll' and 'c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\925f9bdc\bb48a68c\assembly\dl3\2dbf40e1\195f4379_8b0...