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When should null values of Boolean be used?
...umn).
I see no reason to convert from boolean to Boolean as it introduces extra memory overhead, NPE possibility and less typing. Typically I use awkward BooleanUtils.isTrue() to make my life a little bit easier with Boolean.
The only reason for the existence of Boolean is the ability to have coll...
Why is list initialization (using curly braces) better than the alternatives?
...t be converted to another integer that cannot hold its value. For example, char
to int is allowed, but not int to char.
A floating-point value cannot be converted to another floating-point type that cannot hold its
value. For example, float to double is allowed, but not double to float.
A floating-p...
Find a string by searching all tables in SQL Server Management Studio 2008
Is there any way to search for a string in all tables of a database in SQL Server Management Studio 2008?
8 Answers
...
How do exceptions work (behind the scenes) in c++
...ception, @object
.size _ZTS11MyException, 14
_ZTS11MyException:
.string "11MyException"
The typeinfo data.
.section .eh_frame,"a",@progbits
.Lframe1:
.long .LECIE1-.LSCIE1
.LSCIE1:
.long 0x0
.byte 0x1
.string "zPL"
.uleb128 0x1
.sleb128 -4
.byte ...
C++ where to initialize static const
... unit (usually a .cpp file) would do:
foo.h
class foo {
static const string s; // Can never be initialized here.
static const char* cs; // Same with C strings.
static const int i = 3; // Integral types can be initialized here (*)...
static const int j; // ... OR in cpp.
};
f...
How do shift operators work in Java? [duplicate]
...
System.out.println(Integer.toBinaryString(2 << 11));
Shifts binary 2(10) by 11 times to the left. Hence: 1000000000000
System.out.println(Integer.toBinaryString(2 << 22));
Shifts binary 2(10) by 22 times to the left. Hence : 1000000000000000...
How to add leading zeros?
...x <- 10 ^ (0:5)
paste (and it's variant paste0) are often the first string manipulation functions that you come across. They aren't really designed for manipulating numbers, but they can be used for that. In the simple case where we always have to prepend a single zero, paste0 is the best s...
Best way to check if a URL is valid
I want to use PHP to check, if string stored in $myoutput variable contains a valid link syntax or is it just a normal text. The function or solution, that I'm looking for, should recognize all links formats including the ones with GET parameters.
...
How to un-escape a backslash-escaped string?
Suppose I have a string which is a backslash-escaped version of another string. Is there an easy way, in Python, to unescape the string? I could, for example, do:
...
How do I put double quotes in a string in vba?
... I prefer creating a global variable: Public Const vbDoubleQuote As String = """" 'represents 1 double quote (") Public Const vbSingleQuote As String = "'" 'represents 1 single quote (') and using it like so: Shell "explorer.exe " & vbDoubleQuote & sPath & vbDoubleQuote, ...