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How can I convert an image into Base64 string using JavaScript?
I need to convert my image to a Base64 string so that I can send my image to a server.
13 Answers
...
C: What is the difference between ++i and i++?
...nce.
For a for loop, use ++i, as it's slightly faster. i++ will create an extra copy that just gets thrown away.
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How to determine SSL cert expiration date from a PEM encoded certificate?
... the -noout option to see a helpful message using a single command without extra logic. E.g., openssl x509 -checkend 0 -in file.pem will give the output "Certificate will expire" or "Certificate will not expire" indicating whether the certificate will expire in zero seconds.
–...
Git clone particular version of remote repository
...ich means its currently not attached to any branch - then you'll have some extra work to merge new commits to an actual branch.
Example:
$ git log
commit 89915b4cc0810a9c9e67b3706a2850c58120cf75
Author: Jardel Weyrich <suppressed>
Date: Wed Aug 18 20:15:01 2010 -0300
Added a custom e...
How do I find the authoritative name-server for a domain name?
...er:
NS51.DOMAINCONTROL.COM
NS52.DOMAINCONTROL.COM
As for the extra credit: Yes, it is possible.
aryeh is definitely wrong, as his suggestion usually will only give you the IP address for the hostname. If you use dig, you have to look for NS records, like so:
dig ns stackoverflow.co...
Can I query MongoDB ObjectId by date?
...ObjectId embedded with a given datetime */
/* Accepts both Date object and string input */
function objectIdWithTimestamp(timestamp) {
/* Convert string date to Date object (otherwise assume timestamp is a date) */
if (typeof(timestamp) == 'string') {
timestamp = new Date(timestamp)...
How does autowiring work in Spring?
... @RequestMapping("/login")
public void login(@RequestParam("username") String username,
@RequestParam("password") String password) {
// The UserServiceImpl is already injected and you can use it
userService.login(username, password);
}
}
A few notes:
In your ...
Define variable to use with IN operator (T-SQL)
...@c_pos);
while @n_pos > 0
begin
insert into @tab (item) values (SUBSTRING(@list,@c_pos+1,@n_pos - @c_pos-1));
set @c_pos = @n_pos;
set @l_pos = @n_pos;
set @n_pos = CHARINDEX(',',@list,@c_pos+1);
end;
insert into @tab (item) values (SUBSTRING(@list,@l_pos+1,4000));
return;
end;...
FragmentPagerAdapter Exists Only In Android.Support.V4.App (and not Android.App)
...ent = Android.App.Fragment;
namespace Support4
{
[Activity (Label = "@string/fragment_pager_support")]
[IntentFilter (new[]{Intent.ActionMain}, Categories = new[]{ "mono.support4demo.sample" })]
public class FragmentPagerSupport : Activity
//public class FragmentPagerSupport : Fragm...
Get all directories within directory nodejs
....10.0+
We can use the new withFileTypes option of readdirSync to skip the extra lstatSync call:
const { readdirSync } = require('fs')
const getDirectories = source =>
readdirSync(source, { withFileTypes: true })
.filter(dirent => dirent.isDirectory())
.map(dirent => dirent.name...