simple set of commands provided by Gnuplot, Octave provides a rich language for mathematical programming. We can even write our own applications using the C or C + + language and then interact with Octave.Octave was originally written as a supporting software for the chemical reactor design textbook in 1992. Its authors hope to help students solve reactor design problems without having to debug a Fortran program. The result is a very useful language
:
msys/automake1.9 1.9.6-2 (base-devel)
A GNU tool for automatically creating makefiles msys/cmake 3.6.2-1
A Cross-platform Open-source make system
msys/colormake-git r8.9c1d2e6-1
colorized build output
Msys/make 4.2.1-1 (Base-devel) [installed]
GNU made utility to maintain groups of programs Msys/make-git
GNU make utility to maintain groups of programs
Msys/perl 5.24.1-2 (base-devel)
That's msys/make, so when we install it we just need to enter:
Pacman-s Msys/make
or dir
-4.4.sh file, comment The few words related to GCC, and then the source to install GCC my version number gcc_4.9.3, fortunately GCC has provided a script installation method
Tar xzf gcc-4.9.3.tar.gz
cd gcc-4.9.3
./contrib/download_prerequisites
cd
. mkdir objdir
CD objdir
$PWD/.. /gcc-4.9.3/configure--prefix= $HOME/gcc-4.9.3--enable-languages=c,c++,fortran,go make do
installNote This step:
$PWD/.. /gcc-4.9.3/configure--prefix= $HOME/gcc-4.9.3--enable
breakpoint for that word. The listed words cannot contain Fu She characters or symbols, and the letters are handled the same way regardless of the case. The following example causes the system to hyphenate the word "hyphenation" in the specified feasible position, while prohibiting "Fortran", "Fortan" or "Fortran" from disconnecting: \hyphenation{fortran hy-phen
command to force the function to ignore statements that have not yet been executed and return.ReturnReturn Use the return command to cancel the execution of the current function and return immediately, if V. Force call functionCall An expression can be a function that achieves the purpose of forcing the function to be called. and displays the return value of the function, if the function return value is void, then it is not displayed. Another similar command can also be done with this function-
' the array. For downcasting, use the. Astype (t) method.
copy : bool, optional
If true (default), then the object is copied. Otherwise, a copy would only be made if __array__ returns a copy, if obj was a nested sequence, or if a copy is needed to SA Tisfy any of the other requirements (Dtype, order, etc).
order : {' C ', ' F ', ' A '}, optional
Specify the order of the array. If order is ' C ' (default) and then the array woul
WIN32 program design.From c to C + +In the early days of computers, people had to use computers to write programs in machine language or Assembly language.The world's first computer high-level language was born in 1954, it is FORTRAN language? The basic language was simplified on the basis of the Fortran language in 1964? The C language was developed in 1972 by D.m.ritchie of the American Bell Laboratory
The newest gcc-5.1.0 was released and couldn't wait to put it on the test.Download gcc-5.1.0 in http://ftp.gnu.org/gnu/gcc/Then extract to directory gcc-5.1.0/Run Download dependent packages required for compilationGCC dependency packages are: m4-1.4.17.tar.gz,gmp-5.1.3.tar.gz mpfr-3.1.2.tar.gz mpc-1.0.3.tar.gzBut these packages are too new, these dependencies are too new, too old to be able to use only the appropriate version, so the use of GCC's own download relies on the best way.And then
disastrous consequences. The difference between the Shell scripting language and the compiled language is that the programming language can be divided into two categories:compiled and interpreted languages。 Compiled LanguagesMany of the traditional programming languages, such as Fortran, Ada, Pascal, C, C + +, and Java, are compiled languages. These languages require that the source code that we have written be converted into a target tag (object co
the appropriate high-level language for compiling or interpreting programs.Currently widely used in the high-level language has basic, PASCAL, C, COBOL, FORTRAN, logo and VC, VB and so on. These languages are all part of the system software. (Learn about Content II)The computer can not directly accept and execute the source program written in high-level language, when the source program enters the computer, it is translated into the machine language
Introduction to Scheme languageFirst heard of Lisp, Stallman's GNU Emacs used Lisp as an embedded language to customize and enhance Emacs. GNU Emacs is a text editor where text is a symbol, and Lisp is invented for symbolic computations, so using Lisp in GNU Emacs is a logical thing to do. The history of the Lisp language has been long, almost as long as Fortran. In the 1950s, computer scientists first invented the
+ + encapsulated pair of well-known libxml XML parsers.5.7. TinyXML [Wangxinus A very small XML parsing library, based on the DOM. ]6. Scientific calculation6.1, blitz++A high-efficiency numerical computation function library, usually, in C + + written by the numerical program, 20% or so slower than Fortran, blitz++ is to get rid of this shortcoming. Using the C + + template technology, program execution can even be faster than
computing functions designed to create a numerical environment that is as convenient as C + + and faster than FORTRAN. Usually, the numerical program written in C + + is about 20% slower than Fortran, so blitz++ is going to get rid of this shortcoming. The method is to use C + + template technology, program execution can even faster than FORTRAN.blitz++ is still in development and is not available for comm
shell that points to/bin/tcsh, which means that csh is actually tcsh.KshKsh is an abbreviation for the Korn shell, written by Eric Gisin, with a total of 42 internal commands. The biggest advantage of the shell is that it is almost completely compatible with the ksh of the commercial distribution, so you can try out the commercial version of the performance without having to pay for the commercial version.The difference between a shell and a compiled languageIn general, the programming language
harvest.Common programming languagesFrom the beginning of the Fortran design language to the present, the programming language has been constantly modified and innovated, there are a lot of excellent design language, here we summed up some common design language.1. FORTRANThe first is a high-level language widely used in scientific computing. A FORTRAN program has a main program and several sub-programs. H
jump freely. The program is difficult to read and maintain. such as Basic,fortran,algol and so on. 3.2 Structured languagesThe program has good characteristics of the basic structure (sequential structure, branch structure, loop structure), the process of the program does not allow arbitrary jump, the program always from the top to the bottom of the execution of each basic structure. such as Qbasic,fortran
development environmentCompilerC + + Compiler list
Clang: Developed by Apple Inc.
Gcc:gnu Compiler Collection
Intel C + + Compiler: Developed by Intel Corporation
LLVM: A collection of modular and reusable compilers and toolchain technologies
Microsoft Visual C + +: MSVC, developed by Microsoft Corporation
Open watcom:watcom,c,c++ and Fortran cross compilers and tools
TCC: Lightweight C-language compiler
Online c
supercomputers and clusters, this language is part of the Cascade Research project of Cray (the father of supercomputers), initiated by the U.S. Department of Defense Advanced Research Projects Agency (DARPA), with a grand, high-performance computing vision. The grammar of the chapel language has many origins, in addition to the common such as C,c++,java, it also draws on some scientific research language (such as Fortran and MATALB) in the concept.
Code code as follows:
Sub numerically {$a Print join (', sort numerically @array), ' \ n ';
This is easy to understand oh, it is just in the order of the natural number of sort, I do not detail.
2.1 In ASCII order (non-dictionary order) sort
Copy Code code as follows:
@languages = QW (Fortran lisp c C + + Perl python java);
Print join (', sort @languages), ' \ n ';
Print results:
Copy Code code as follows:
First, the previous simple write the RE module operation String, plus regular after re module to play a more powerful function.First look at the common regular symbols:Review the basic RE module:ImportRetext='C + + python2 Python3 perl Ruby Lua Java javascript php4 php5 c'#match,search,findall,split,subRe.match (R'Java', text)#only your change, no words returned none returns a Re.search (R'Java', text)#find the matching characters from the beginning#Re.match (R'c\++', text), Re.match (R'c\+\+',
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