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How to run a program without an operating system?
...tall it to a disk.
Here we create one with a single printf call:
printf '\364%509s\125\252' > main.img
sudo apt-get install qemu-system-x86
qemu-system-x86_64 -hda main.img
Outcome:
Note that even without doing anything, a few characters are already printed on the screen. Those are printed by t...
PDO MySQL: Use PDO::ATTR_EMULATE_PREPARES or not?
... can lead to strange bugs, for example:
Losing most significant bits for 64bit integers when binding as PDO::PARAM_INT ( 0x12345678AB will be cropped to 0x345678AB on 64bit machine )
Inability to make simple queries like LOCK TABLES ( it throws SQLSTATE[HY000]: General error: 2030 This command is ...
Calculating arithmetic mean (one type of average) in Python
...red Dec 28 '13 at 22:38
kirbyfan64soskirbyfan64sos
8,56266 gold badges4545 silver badges6666 bronze badges
...
How to optimize for-comprehensions and loops in Scala?
...ween run times of 2.5s and 0.7s were entirely due to whether the 32-bit or 64-bit JVMs were being used. Scala from the command line uses whatever is set by JAVA_HOME, while Java uses 64-bit if available regardless. IDEs have their own settings. Some measurements here: Scala execution times in Eclips...
对外网用户的squid代理+认证 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...cgi-bin ?
acl QUERY urlpath_regex cgi-bin \?
cache deny QUERY
cache_mem 64 MB
cache_dir ufs /usr/local/squid/cache 7000 16 256
access_log /dev/null
cache_log /dev/null
cache_store_log none
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 43...
What is an undefined reference/unresolved external symbol error and how do I fix it?
...n C++ code.
Incorrectly importing/exporting methods/classes across modules/dll. (MSVS specific)
Circular library dependency
undefined reference to `WinMain@16'
Interdependent library order
Multiple source files of the same name
Mistyping or not including the .lib extension when using the #pragma (Mi...
Kill some processes by .exe file name
...above code return Exception (a 32 bit processes cannot access modules of a 64 bit process) ?
– Manish
Aug 31 '13 at 11:29
40
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Linux - Install redis-cli only
...isn't working http://security.ubuntu.com/ubuntu bionic-updates/universe amd64 redis-tools amd64 5:4.0.9-1ubuntu0.1 returns 404 Not Found
– Andrew Sneck
Nov 25 '19 at 9:28
...
Converting an int to a binary string representation in Java?
...of 100 = 144
Decimal eqivalent of 100 = 100
Hexadecimal eqivalent of 100 = 64
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Installing SciPy and NumPy using pip
... To install BLAS and LAPACK you need to run yum install lapack-devel.x86_64 blas-devel.x86_64
– Max L
Apr 5 '16 at 11:27
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