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Is there a way to iterate over a slice in reverse in Go?
...nicer in my sense.
package main
import (
"fmt"
)
func reverse(lst []string) chan string {
ret := make(chan string)
go func() {
for i, _ := range lst {
ret <- lst[len(lst)-1-i]
}
close(ret)
}()
return ret
}
func main() {
elms := []str...
do { … } while (0) — what is it good for? [duplicate]
...t;}) instead of do {} while(0):
#include <stdio.h>
#define log_to_string1(str, fmt, arg...) \
do { \
sprintf(str, "%s: " fmt, "myprog", ##arg); \
} while (0)
#define log_to_string2(str, fmt, arg...) \
({ \
sprintf(str, "%s: " fmt, "myprog", ##arg); \
})
int...
Static Indexers?
...tionManager;
}
public class ConfigurationManager
{
public object this[string value]
{
get => new object();
set => // set something
}
}
Now you can call Utilities.ConfigurationManager["someKey"] using indexer notation.
...
How to print color in console using System.out.println?
...you could define constants like these for the colors:
public static final String ANSI_RESET = "\u001B[0m";
public static final String ANSI_BLACK = "\u001B[30m";
public static final String ANSI_RED = "\u001B[31m";
public static final String ANSI_GREEN = "\u001B[32m";
public static final String ANSI_...
What is an example of the simplest possible Socket.io example?
...te easiest and smallest example i could come up with.
this just returns a string passed from the console UPPERCASED.
app.js
var http = require('http');
var app = http.createServer(function(req, res) {
console.log('createServer');
});
app.listen(3000);
var io = require('socket.io').liste...
What does it mean by buffer?
...ample. In a C program, for example, you might have:
#define BUFSIZE 1024
char buffer[BUFSIZE];
size_t len = ;
// ... later
while((len=read(STDIN, &buffer, BUFSIZE)) > 0)
write(STDOUT, buffer, len);
... which is a minimal version of cp(1). Here, the buffer array is used to store the ...
How to pass command line arguments to a rake task
...
Also, make sure you enclose the argument in string. e.g from your command line run the rake task like so rake thing:work'[1,2,3]'
– theterminalguy
Jan 14 '17 at 8:01
...
How to print an exception in Python?
...
In case you want to pass error strings, here is an example from Errors and Exceptions (Python 2.6)
>>> try:
... raise Exception('spam', 'eggs')
... except Exception as inst:
... print type(inst) # the exception instance
... print ins...
Split (explode) pandas dataframe string entry to separate rows
I have a pandas dataframe in which one column of text strings contains comma-separated values. I want to split each CSV field and create a new row per entry (assume that CSV are clean and need only be split on ','). For example, a should become b :
...
What is the Difference Between read() and recv() , and Between send() and write()?
...). However, it didn't work when I tried to send binary data that included character 10. write() somewhere inserted character 13 before this. Changing it to send() with a flags parameter of 0 fixed that problem. read() could have the reverse problem if 13-10 are consecutive in the binary data, bu...