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What is the MySQL VARCHAR max size?
...re and after MySQL 5.0.3
Values in VARCHAR columns are variable-length strings. The length can be specified as a value from 0 to 255 before MySQL 5.0.3, and 0 to 65,535 in 5.0.3 and later versions. The effective maximum length of a VARCHAR in MySQL 5.0.3 and later is subject to the maximum row s...
Why do we need C Unions?
...s are often used to convert between the binary representations of integers and floats:
union
{
int i;
float f;
} u;
// Convert floating-point bits to integer:
u.f = 3.14159f;
printf("As integer: %08x\n", u.i);
Although this is technically undefined behavior according to the C standard (you'r...
Xcode stuck on Indexing
... not take time then my issue is resolved. Like e.g. let propertyType : [[[String : String]]] = [ [ ["propertyKey":"All Types"], ["propertyKey":"House"] ], ...
What are the options for storing hierarchical data in a relational database? [closed]
...s a result, most people end up having to settle for one or the other especially if there are more than, say, a lousy 100,000 nodes or so. Using the push stack method can take a whole day to do the conversion on what MLM'ers would consider to be a small million node hierarchy.
I thought I'd give Ce...
Age from birthdate in python
...
That probably depends on your definition of "age". For all practical purposes a birthday is usually given as a date, not timezone-aware datetime (i.e., "born" is missing the details). Most people are not born at midnight sharp (so usually observe prematurely :-)), and when in a d...
Passing multiple variables in @RequestBody to a Spring MVC controller using Ajax
...pping(value = "/Test", method = RequestMethod.POST)
public boolean getTest(String str1, String str2)
First define a custom annotation, say @JsonArg, with the JSON path like path to the information that you want:
public boolean getTest(@JsonArg("/str1") String str1, @JsonArg("/str2") String str2)
...
What do we mean by Byte array? [closed]
... 16-bit unsigned int from 0..65535), international character sets, textual strings ("hello"), or part/all of a compiled computer programs.
The crucial thing about a byte array is that it gives indexed (fast), precise, raw access to each 8-bit value being stored in that part of memory, and you can o...
Calling a JavaScript function named in a variable [duplicate]
...d, then:
myNameSpace["functionName"]();
Avoid eval, and avoid passing a string in to setTimeout and setInterval. I write a lot of JS, and I NEVER need eval. "Needing" eval comes from not knowing the language deeply enough. You need to learn about scoping, context, and syntax. If you're ever stuck...
Meaning of …interface{} (dot dot dot interface)
...ecification as well:
Given the function and calls
func Greeting(prefix string, who ...string)
Greeting("nobody")
Greeting("hello:", "Joe", "Anna", "Eileen")
within Greeting, who will have the value nil in the first call, and []string{"Joe", "Anna", "Eileen"} in the second.
If the final ar...
How can I initialize a String array with length 0 in Java?
The Java Docs for the method
String[] java.io.File.list(FilenameFilter filter)
includes this in the returns description:
...