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What is the purpose of base 64 encoding and why it used in HTTP Basic Authentication?
...oding. It's a way of representing binary data using only printable (text) characters.
See this paragraph from the wikipedia page for HTTP Basic Authentication:
While encoding the user name and password with the Base64 algorithm typically makes them unreadable by the naked eye, they are as easi...
How to get values from IGrouping
I have a question about IGrouping and the Select() method.
4 Answers
4
...
Group by month and year in MySQL
...
I prefer
SELECT
MONTHNAME(t.summaryDateTime) as month, YEAR(t.summaryDateTime) as year
FROM
trading_summary t
GROUP BY EXTRACT(YEAR_MONTH FROM t.summaryDateTime) DESC";
...
How to convert std::string to LPCWSTR in C++ (Unicode)
... int len;
int slength = (int)s.length() + 1;
len = MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, 0, 0);
wchar_t* buf = new wchar_t[len];
MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, buf, len);
std::wstring r(buf);
delete[] buf;
return r;
}
std::wstring stemp...
How to get the top 10 values in postgresql?
...
For this you can use limit
select *
from scores
order by score desc
limit 10
If performance is important (when is it not ;-) look for an index on score.
Starting with version 8.4, you can also use the standard (SQL:2008) fetch first
select *
from...
How to remove the border highlight on an input text element
When an HTML element is 'focused' (currently selected/tabbed into), many browsers (at least Safari and Chrome) will put a blue border around it.
...
What is the difference between precision and scale?
...on. e.g: Precision 4, scale 2 - will fail any number > 99.9999..; try: select cast (99.99999 as NUMBER(4,2)) from dual; //OK; select cast (100.9 as NUMBER(4,2)) from dual; //FAIL;
– Jama Djafarov
Mar 6 '15 at 17:47
...
XPath to select multiple tags
...l-name()='e']
is both too-long and incorrect. This XPath expression will select nodes like:
OhMy:c
NotWanted:d
QuiteDifferent:e
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...
What is this: [Ljava.lang.Object;?
... name consists of the name of the element type preceded by one or more '[' characters representing the depth of the array nesting.
The encoding of element type names is as follows:
Element Type Encoding
boolean Z
byte B
char C
double D...
Safe characters for friendly url [closed]
...
To quote section 2.3 of RFC 3986:
"Characters that are allowed in a URI but do not have a reserved
purpose are called unreserved. These include uppercase and lowercase
letters, decimal digits, hyphen, period, underscore, and tilde."
ALPHA DIGIT "-" /...