functions.jl at 6049c2f ⋅ queryverse/QuerySQLite.jl

"""
    char(numbers...)

Convert a list of numbers to a string with the corresponding characters

```jldoctest
julia> using QuerySQLite

julia> char(65, 90)
"AZ"
```
"""
char(numbers...) = string(map(Char, numbers)...)
export char

"""
    if_else(switch, yes, no)

`ifelse` that you can add methods to.

```jldoctest
julia> using QuerySQLite

julia> if_else(true, 1, 0)
1

julia> if_else(false, 1, 0)
0
```
"""
function if_else(switch, yes, no)
    ifelse(switch, yes, no)
end
export if_else

"""
    instr(haystack, needle)

Find the first index of `needle` in `haystack`.

```jldoctest
julia> using QuerySQLite

julia> instr("QuerySQLite", "SQL")
6
```
"""
function instr(haystack, needle)
    first(findfirst(needle, haystack))
end
export instr

"""
    type_of(it)

`typeof` that you can add methods to.

```jldoctest
julia> using QuerySQLite

julia> type_of('a')
Char
```
"""
function type_of(it)
    typeof(it)
end
export type_of

"""
    hex(it)

Uppercase hexadecimal representation

```jldoctest
julia> using QuerySQLite

julia> hex("hello")
"68656C6C6F"
```
"""
function hex(it::Number)
    uppercase(string(it, base=16))
end
function hex(it::AbstractString)
    join(hex(byte) for byte in codeunits(it))
end
export hex

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1		"""
2		char(numbers...)
3
4		Convert a list of numbers to a string with the corresponding characters
5
6		```jldoctest
7		julia> using QuerySQLite
8
9		julia> char(65, 90)
10		"AZ"
11		```
12		"""
13	1	char(numbers...) = string(map(Char, numbers)...)
14		export char
15
16		"""
17		if_else(switch, yes, no)
18
19		`ifelse` that you can add methods to.
20
21		```jldoctest
22		julia> using QuerySQLite
23
24		julia> if_else(true, 1, 0)
25		1
26
27		julia> if_else(false, 1, 0)
28		0
29		```
30		"""
31		function if_else(switch, yes, no)
32	1	ifelse(switch, yes, no)
33		end
34		export if_else
35
36		"""
37		instr(haystack, needle)
38
39		Find the first index of `needle` in `haystack`.
40
41		```jldoctest
42		julia> using QuerySQLite
43
44		julia> instr("QuerySQLite", "SQL")
45		6
46		```
47		"""
48		function instr(haystack, needle)
49	1	first(findfirst(needle, haystack))
50		end
51		export instr
52
53		"""
54		type_of(it)
55
56		`typeof` that you can add methods to.
57
58		```jldoctest
59		julia> using QuerySQLite
60
61		julia> type_of('a')
62		Char
63		```
64		"""
65		function type_of(it)
66	1	typeof(it)
67		end
68		export type_of
69
70		"""
71		hex(it)
72
73		Uppercase hexadecimal representation
74
75		```jldoctest
76		julia> using QuerySQLite
77
78		julia> hex("hello")
79		"68656C6C6F"
80		```
81		"""
82		function hex(it::Number)
83	0	uppercase(string(it, base=16))
84		end
85		function hex(it::AbstractString)
86	1	join(hex(byte) for byte in codeunits(it))
87		end
88		export hex