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snprintf and Visual Studio 2010
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Short story: Microsoft has finally implemented snprintf in Visual Studio 2015. On earlier versions you can simulate it as below.
Long version:
Here is the expected behavior for snprintf:
int snprintf( char* buffer, std::size_t buf_size, const char* format, ... );
Writes at m...
Java Singleton and Synchronization
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Yes, it is necessary. There are several methods you can use to achieve thread safety with lazy initialization:
Draconian synchronization:
private static YourObject instance;
public static synchronized YourObject getInstance() {
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How to design a database for User Defined Fields?
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If performance is the primary concern, I would go with #6... a table per UDF (really, this is a variant of #2). This answer is specifically tailored to this situation and the description of the data distribution and access patterns describe...
Is there any way to close a StreamWriter without closing its BaseStream?
My root problem is that when using calls Dispose on a StreamWriter , it also disposes the BaseStream (same problem with Close ).
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c# open a new form then close the current form?
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Steve's solution does not work. When calling this.Close(), current form is disposed together with form2. Therefore you need to hide it and set form2.Closed event to call this.Close().
private void OnButton1Click(object sender, EventArgs e)
{
this.Hide();
var form...
Internal typedefs in C++ - good style or bad style?
Something I have found myself doing often lately is declaring typedefs relevant to a particular class inside that class, i.e.
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Use of #pragma in C
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#pragma is for compiler directives that are machine-specific or operating-system-specific, i.e. it tells the compiler to do something, set some option, take some action, override some default, etc. that may or may not apply to all ma...
Why is [1,2] + [3,4] = “1,23,4” in JavaScript?
I wanted to add the elements of an array into another, so I tried this:
13 Answers
13
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Regex to Match Symbols: !$%^&*()_+|~-=`{}[]:";'?,./
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The regular expression for this is really simple. Just use a character class. The hyphen is a special character in character classes, so it needs to be first:
/[-!$%^&*()_+|~=`{}\[\]:";'<>?,.\/]/
You also need to escape the other regular e...
grant remote access of MySQL database from any IP address
I am aware of this command:
21 Answers
21
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