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SQL command to display history of queries
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cat ~/.mysql_history
this will show you all mysql commands ran on the system
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tinyxml XML解析库下载（tinyxml2.h 和 tinyxml2.cpp） - 源码下载 - 清泛...
...tCharacterRef( const char* p, char* value, int* length );
static void ConvertUTF32ToUTF8( unsigned long input, char* output, int* length );
// converts primitive types to strings
static void ToStr( int v, char* buffer, int bufferSize );
static void ToStr( unsigned v, char* buff...
Simple insecure two-way data “obfuscation”?
...region
return UTFEncoder.GetString(decryptedBytes);
}
/// Convert a string to a byte array. NOTE: Normally we'd create a Byte Array from a string using an ASCII encoding (like so).
// System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
// return ...
How do I list all the columns in a table?
For the various popular database systems, how do you list all the columns in a table?
12 Answers
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convert ArrayList to JSONArray
... an ArrayAdapter for a ListView. I need to take the items in the list and convert them to a JSONArray to send to an API. I've searched around, but haven't found anything that explains how this might work, any help would be appreciated.
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Casting vs using the 'as' keyword in the CLR
... The cast is
// the best code if that's the behaviour you want.
TargetType convertedRandomObject = (TargetType) randomObject;
If randomObject might be an instance of TargetType and TargetType is a reference type, then use code like this:
TargetType convertedRandomObject = randomObject as TargetTyp...
What is the difference between const_iterator and non-const iterator in the C++ STL?
...a const violation, in my opinion). If you want do that anyway, you have to convert it to a non-const iterator using std::advance() or boost::next(). Eg. boost::next(container.begin(), std::distance(container.begin(), the_const_iterator_we_want_to_unconst)). If container is a std::list, then the runn...
How to include (source) R script in other scripts
...e, checks to see if the file has been loaded into the environment and uses sys.source to source the file if not.
Here's a quick and untested function (improvements welcome!):
include <- function(file, env) {
# ensure file and env are provided
if(missing(file) || missing(env))
stop("'fil...
What is the best way to auto-generate INSERT statements for a SQL Server table?
...data (Extended characters or Unicode). If needed
you might want to convert the datatypes of character variables in this procedure to their respective unicode counterparts
like nchar and nvarchar
Example 1: To generate INSERT statements for table 'titles':
EXEC sp_generate...
How can I format a String number to have commas and round?
...s that would get formatted as 1.000.500.000,57 instead).
You also need to convert that string into a number, this can be done with:
double amount = Double.parseDouble(number);
Code sample:
String number = "1000500000.574";
double amount = Double.parseDouble(number);
DecimalFormat formatter = ne...