从Function回忆起,函数是一个将参数元组映射到返回值的对象,或者,如果无法返回适当的值,则抛出异常。对于不同类型的参数,相同的概念函数或操作的实现方式通常非常不同:添加两个整数与添加两个浮点数有很大不同,这两个区别都不同于将整数添加到浮点数。尽管它们的实现存在差异,但这些操作都属于“加法”的一般概念。...
, append!, applicable, ArgumentError, Array, ascii, asec, asecd, asech, asin, asind, asinh, assert, AssertionError, atan, atan2, atand, atanh, atexit, atreplinit, At_ldiv_B, At_ldiv_Bt, At_mul_B, At_mul_Bt, At_rdiv_B, At_rdiv_Bt, A_ldiv_Bc, A_ldiv_Bt, A_mul_B!, ...
The array, b, is changed by applying this append! method—that's why it ends in an exclamation mark (!). This is a general convention.A function whose name ends in a ! changes its first argument. Likewise, push! and pop! append one element at the end, or take one away and return...
理解Blob对象在Blob对象出现之前,在javascript中一直没有比较好的方式处理二进制文件,自从有了Blob了,我们就可以使用它操作二进制数据了。...);``` dataArray: 它是一个数组,它包含了要添加到Blob对象中的数据。...options是可选的对象参数,用于设置数组中数据的MIME类型。创建一个DOMString对象的Blob对象。....
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(+1*im*ky)*ones(q-1)H=convert(Array,Tridiagonal(diagL,diagD,diagR))# We use the method Tridiagonal to setup the matrix, and convert it to normal# matrix to define the boundary conditionH[q,1]=-t*exp(+1*im*ky)H[1,q]=-t*exp(-1*im*ky)# The bouandary condition is set....
An array of the command line arguments passed to Julia, as strings. """ constARGS=String[] """ exit(code=0) Stop the program with an exit code. The default exit code is zero, indicating that the program completed successfully. In an interactive session, `exit()` can be called wit...
julia> myf = convert(Array, mydata[:, 1:4]) 150×4 Array{Float64,2}: 5.1 3.5 1.4 0.2 4.9 3.0 1.4 0.2 4.7 3.2 1.3 0.2 4.6 3.1 1.5 0.2 5.0 3.6 1.4 0.2 5.4 3.9 1.7 0.4 4.6 3.4 1.4 0.3 5.0 3.4 1.5 0.2 4.4 2.9 1.4 0.2 ...
In this recipe, we convert this array to String. Two specific constructs in this recipe that also merit some explanation are as follows: When we write idx = 3 - idx, we make idx flip between the 1 and 2 values; this is a common transformation in languages using 1-based indexing when ...
表FBC-1.1:在 i7 Mac 上迭代查找斐波那契数列所用的时间。 表FBC-2.0:在 Xeon 节点上递归查找斐波那契数列所用的时间。 表FBC-2.1:在 i7 Mac 上递归查找斐波那契数列所用的时间。 矩阵乘法 将两个随机生成的nxn矩阵A和B相乘。测量执行乘法的时间。这个问题说明了利用每种语言中可用的内置库的重要性。