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Base64: What is the worst possible increase in space usage?
...y possibly become when converted to a Base64 string (assuming one byte per character)?
5 Answers
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How do pointer to pointers work in C?
...his case, if this is the only occurrence of "hello" in memory then,
const char *c = "hello";
... defines c to be a pointer to the (read-only) string "hello", and thus contains the value 63. c must itself be stored somewhere: in the example above at location 58. Of course we can not only point to ...
Concatenate text files with Windows command line, dropping leading lines
I need to concatenate some relatively large text files, and would prefer to do this via the command line. Unfortunately I only have Windows, and cannot install new software.
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URLEncoder not able to translate space character
...be encoded as follows:
Control names and values are escaped. Space characters are replaced
by `+'
You will have to replace it, e.g.:
System.out.println(java.net.URLEncoder.encode("Hello World", "UTF-8").replace("+", "%20"));
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How to format strings in Java
...on isn't even accurate. + is equivalent to using StringBuilder, not String.concat. (Way too much info on this.)
– Søren Løvborg
Sep 4 '12 at 8:01
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How do I match any character across multiple lines in a regular expression?
... is:
/(.*)<FooBar>/s
The s at the end causes the dot to match all characters including newlines.
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COALESCE Function in TSQL
...ore
values ('aa'),('bb'),('cc')
declare @str varchar (4000)
select @str = concat(@str+',',store_id) from @store
select @str
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Parsing a comma-delimited std::string [duplicate]
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Input one number at a time, and check whether the following character is ,. If so, discard it.
#include <vector>
#include <string>
#include <sstream>
#include <iostream>
int main()
{
std::string str = "1,2,3,4,5,6";
std::vector<int> vect;
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How to convert DateTime to VarChar
...ver 2005 where I need to convert a value in DateTime variable into a varchar variable in yyyy-mm-dd format (without time part). How do I do that?
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json_encode is returning NULL?
... you are retrieving data in non-utf8 encoding: try to put mysql_query('SET CHARACTER SET utf8') before your SELECT query.
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