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What's the best way to check if a file exists in C?
...e file exists. Stat() can have a large overheard if you don't need all the extra info.
– Martin Beckett
Oct 23 '08 at 15:16
4
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What is the meaning of the prefix N in T-SQL statements and when should I use it?
...
It's declaring the string as nvarchar data type, rather than varchar
You may have seen Transact-SQL code that passes strings around using
an N prefix. This denotes that the subsequent string is in Unicode
(the N actually stands for Nati...
How to model type-safe enum types?
...to get something most closely resembling a Java Enum (i.e. with sensible toString and valueOf methods -- perhaps you are persisting the enum values to a database) you need to modify it a bit. If you had used skaffman's code:
WeekDay.valueOf("Sun") //returns None
WeekDay.Tue.toString //returns We...
How many and which are the uses of “const” in C++?
... compiler help you to decide when and when not you need to copy.
struct MyString {
char * getData() { /* copy: caller might write */ return mData; }
char const* getData() const { return mData; }
};
Explanation: You might want to share data when you copy something as long as the data of th...
Using Java to find substring of a bigger string using Regular Expression
If I have a string like this:
12 Answers
12
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C++ templates Turing-complete?
...;
template<int n>
struct State {
enum { value = n };
static char const * name;
};
template<int n>
char const* State<n>::name = "unnamed";
struct QAccept {
enum { value = -1 };
static char const* name;
};
struct QReject {
enum { value = -2 };
static char ...
Remove all special characters from a string [duplicate]
...
This should do what you're looking for:
function clean($string) {
$string = str_replace(' ', '-', $string); // Replaces all spaces with hyphens.
return preg_replace('/[^A-Za-z0-9\-]/', '', $string); // Removes special chars.
}
Usage:
echo clean('a|"bc!@£de^&$f g');
...
How do I concatenate strings and variables in PowerShell?
...
This doesn't work for distributing strings across multiple lines. Instead use ( $string1, $string2, $string3 ) -join "" or ($string1 + $string2 + $string3). With these methods, you can have whitespace (spaces, tabs, and newlines) between the strings, but be s...
When should one use final for method parameters and local variables?
...l variables when using conditions.
Let me give you an example:
final String name;
switch(pluginType) {
case CANDIDATE_EXPORT:
name = "Candidate Stuff";
break;
case JOB_POSTING_IMPORT:
name = "Blah";
break;
default:
...
How to add a custom loglevel to Python's logging facility
...thout *? If I do that, I get TypeError: not all arguments converted during string formatting but it works fine with *. (Python 3.4.3). Is it a python version issue, or something I'm missing?
– Peter
Apr 16 '17 at 20:10
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