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Determining 32 vs 64 bit in C++
... I think you should use "#if defined(WIN32) || defined(_WIN64)" etc
– KindDragon
Dec 13 '13 at 13:03
3
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Batch files - number of command line arguments
...
IF "%1"=="" GOTO HAVE_0
IF "%2"=="" GOTO HAVE_1
IF "%3"=="" GOTO HAVE_2
etc.
If you have more than 9 arguments then you are screwed with this approach though. There are various hacks for creating counters which you can find here, but be warned these are not for the faint hearted.
...
Why do people say that Ruby is slow? [closed]
...Nginx, SQLite, MySQL, PostgreSQL, many parsing libraries, RMagick, TCP/IP, etc are C programs used by Ruby. Ruby provides the glue and the business logic.
What are your options as a Ruby
programmer if you want to deal with
this "slowness"?
Switch to a faster language. But that carries a c...
How do I spool to a CSV formatted file using SQLPLUS?
...n the primary inner subquery, but aliasing all the columns as col1, col2...etc. is required there.
– Amit Naidu
May 8 '18 at 22:33
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Why would I use Scala/Lift over Java/Spring? [closed]
...d with programmatically generated form elements, <div>s, <p>s, etc.
This is powerful and useful, especially since Scala has a builtin language-level XML mode. One can write XML inline within Scala methods, including variable bindings in braces. This can be delightful for very simple X...
curl: (60) SSL certificate problem: unable to get local issuer certificate
...e certificate.
Add the root CA (the CA signing the server certificate) to /etc/ssl/certs/ca-certificates.crt
You should use option 2 as it's the option that ensures that you are connecting to secure FTP server.
share
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What does multicore assembly language look like?
...ng "load the EDX register with the value 5", "increment the EDX" register, etc.
10 Answers
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When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
... In todays world, Data Execution Prevention doesn't even allow the CPU to fetch an instruction from the heap. This answer is outdated since XP SP2.
– MSalters
Apr 5 '17 at 8:27
2
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mongodb最大连接数配置修改 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
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echo "* soft nofile 4096" >>/etc/security/limits.conf
echo "* hard nofile 4096" >>/etc/security/limits.confmongodb 最大连接数 配置
Extracting bits with a single multiplication
...bits that meet the (n-m) criterion, but also the ones that are at (n-m+1), etc. Let's call their number Q0 (exactly n-m to next bit), Q1 (n-m+1), up to Q(N-1) (n-1). Then we risk carry if
Q0 > 1
Q0 == 1 && Q1 >= 2
Q0 == 0 && Q1 >= 4
Q0 == 1 && Q1 > 1 && Q...