How to Format a Currency with Commas in Golang
Formatting float to currency string in Go.
Using localized formatting
Use golang.org/x/text/message to print using localized formatting for any language in the Unicode CLDR.
Make a main.go file containing the following:
package main
import (
"...
How to Check String is In Json Format in Go
In Golang, there are 2 ways to check string is in json format.
Using Unmarshal Function
The following example should cover whatever you are trying to do:
package main
import (
"encoding/json"
"fmt"
)
func isJson(s string) bool {
var js ...
How to Marshal / Unmarshal Json with a Custom Type Attribute in Go
In Golang, using the Unmarshal JSON function is the easiest way to Marshal / Unmarshal json with a custom type attribute.
JSON (JavaScript Object Notation) is a lightweight data-interchange format.
Using UnmarshalJSON Function
Example on custom Unm...
How to Get the Full URL in PHP
In PHP, using the $_SERVER variable is the easiest way to get the full URL.
Using $_SERVER Variable
$_SERVER is an array containing information such as headers, paths, and script locations.
The following example should cover whatever you are trying...
How to Check if a File is a Valid Image in Go
In Golang, there are 2 ways to check if a file is a valid image.
Using DetectContentType Function
The http.DetectContentType() function implements the algorithm described at https://mimesniff.spec.whatwg.org/ to determine the Content-Type of the gi...
How to Print the Memory Address of a Slice in Go
In Golang, using the %p verbs is the easiest way to print the memory address of a slice.
Using fmt.Printf Function
Pointer:
%p base 16 notation, with leading 0x. The %b, %d, %o, %x and %X verbs also work with pointers,
formatting the value exactly ...
How to Get a Function Name as a String in Python
In Python, there are 2 ways to get a function name as a string.
Using __name__ Attribute
Using __qualname__ is the preferred method as it applies uniformly. It works on built-in functions as well:
#!/usr/bin/python3
def my_func():
pass
class...
How to Remove all Whitespace in a String in Python
In Python, there are 3 ways to remove all whitespace in a string.
Using str.replace Function
The str.replace(x) function returns a copy of the string with all occurrences of substring old replaced by new.
See the following example:
#!/usr/bin/p...
How to Get File Length in Go
In Golang, there are 2 ways to get file length.
Using file.Stat Function
Open opens the named file for reading. If successful, methods on the returned file can be used for reading; the associated file descriptor has mode O_RDONLY.
See the followin...
How to Do a Case Insensitive Regular Expression in Go
In Golang, using the a case-insensitive flag is the easiest way to do a case insensitive regular expression.
Using a case-insensitive flag
You can set a case-insensitive flag as the first item in the regex.
You can add a (?i) at the beginning of th...
How to Check the Version of the Interpreter in Python
In Python, there are 3 ways to check what version of the Interpreter is interpreting my script.
Using sys.version String
A string containing the version number of the Python interpreter plus additional information on the build number and compiler us...
How to Convert a Bool to a String in Go
In Golang, there are 2 ways to convert a bool to a string.
Using strconv.FormatBool Function
The strconv.FormatBool() function returns "true" or "false" according to the value of b. For example,
package main
import (
"fmt"
"strconv"
)
fun...
How to Subtracting time.Duration from Time in Go
In Golang, using the time.Duration function is the easiest way to subtract time from a time.Time
Using time.Duration Function
A Duration represents the elapsed time between two instants as an int64 nanosecond count. The representation limits the la...
How to Pad a Numeric String with Zeros to the Left in Python
In Python, there are 3 ways to pad a numeric string with zeros to the left.
Using zfill Method
The str.zfill(width) method returns a copy of the string left filled with ASCII '0' digits to make a string of length width. For example,
#!/usr/bin/...
How to Remove a Trailing Newline in Python
In Python, there are 4 ways to remove a trailing newline.
Using rstrip Method
The str.rstrip() method returns a copy of the string with trailing characters removed. For example,
#!/usr/bin/python3
s = "\nab c\r\n"
# str.rstrip([chars])
n = s....