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Best way to convert list to comma separated string in java [duplicate]
I have Set<String> result & would like to convert it to comma separated string. My approach would be as shown below, but looking for other opinion as well.
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How to read a CSV file into a .NET Datatable
...m.Globalization;
// using System.IO;
static DataTable GetDataTableFromCsv(string path, bool isFirstRowHeader)
{
string header = isFirstRowHeader ? "Yes" : "No";
string pathOnly = Path.GetDirectoryName(path);
string fileName = Path.GetFileName(path);
string sql = @"SELECT * FROM ["...
How important is the order of columns in indexes?
...mns involved.
Giving that rationale, the only difference is comparing two 'strings' that differ earlier versus later in the string. This is a tiny part of the total cost. There is no "first pass / second pass", as mentioned in one Answer.
So, what order should be used?
Start with column(s) tested...
What are sessions? How do they work?
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@Gab是好人 REFERRER usually means an arbitrary string that the client sends in the "Referer" HTTP request header. It should contain the URL of the resource that, you know, referred the client to the current resource.
– Luke404
Aug 8 ...
const char *, char const *, char * const 异同？const修饰符各位置有何区...
const char *, char const *, char * const 异同？const修饰符各位置有何区别？const char * p = new char('a'); 这个是常字符，即p的内容不能被修改。char const * p 意义同上，没有区别。 这时，*...const char * p = new char('a'); 这个是常字符，即p的内容...
Hash function that produces short hashes?
Is there a way of encryption that can take a string of any length and produce a sub-10-character hash? I want to produce reasonably unique ID's but based on message contents, rather than randomly.
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C read file line by line
... printf(line) is wrong! Do not do this. This opens your code to a string format vulnerability where you can freely read/write directly to memory via the stuff being printed. If I were to put %n/%p in the file and point the pointer back to an address in memory (in the string from the file) t...
how do i remove a comma off the end of a string?
I want to remove the comma off the end of a string. As it is now i am using
10 Answers
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Can a C++ enum class have methods?
...r.
You could easily add methods such that:
Fruit f("Apple");
and
f.ToString();
can be supported.
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PHP mail function doesn't complete sending of e-mail
...ed out.
Make sure the mail() function is called correctly
bool mail ( string $to , string $subject , string $message [, string $additional_headers [, string $additional_parameters ]] )
The mail function takes three required parameters and optionally a fourth and fifth one. If your call to mai...