大约有 23,000 项符合查询结果（耗时：0.0432秒） [XML]
When should you not use virtual destructors?
...ays that if you were to copy from an object with POD type into an array of chars (or unsigned chars) and back again, then the result will be the same as the original object.]
Modern C++
In recent versions of C++, the concept of POD was split between the class layout and its construction, copying a...
What is time_t ultimately a typedef to?
... to migrate your code.
Your data will be fine if you store your data as a string, even if it's something simple like:
FILE *stream = [stream file pointer that you've opened correctly];
fprintf (stream, "%d\n", (int)time_t);
Then just read it back the same way (fread, fscanf, etc. into an int), a...
How should I escape commas and speech marks in CSV files so they work in Excel?
... rules.
If the value contains a comma, newline or double quote, then the String value should be returned enclosed in double quotes.
Any double quote characters in the value should be escaped with another double quote.
If the value does not contain a comma, newline or double quote, then the
String ...
C# string reference type?
I know that "string" in C# is a reference type. This is on MSDN. However, this code doesn't work as it should then:
10 An...
Convert seconds to HH-MM-SS with JavaScript?
How can I convert seconds to an HH-MM-SS string using JavaScript?
34 Answers
34
...
How to efficiently concatenate strings in go
In Go, a string is a primitive type, which means it is read-only, and every manipulation of it will create a new string.
...
What are the performance characteristics of sqlite with very large database files? [closed]
...
The tests involve a single sqlite file with either a single table, or multiple tables. Each table had about 8 columns, almost all integers, and 4 indices.
The idea was to insert enough data until sqlite files were about 50GB.
Single Table
I tried to insert multiple rows into a sqlite file with j...
Calculating distance between two points, using latitude longitude?
...distanceAlgorithm;
public class CalDistance {
public static void main(String[] args) {
// TODO Auto-generated method stub
CalDistance obj=new CalDistance();
/*obj.distance(38.898556, -77.037852, 38.897147, -77.043934);*/
System.out.println(obj.distance(38.898556, -77.037...
Does Notepad++ show all hidden characters?
...+. On newer versions you can use:
Menu View → Show Symbol → *Show All Characters`
or
Menu View → Show Symbol → Show White Space and TAB
(Thanks to bers' comment and bkaid's answers below for these updated locations.)
On older versions you can look for:
Menu View → Show all characte...
How to store int[] array in application Settings
...ing with desired name (e.g. SomeTestSetting) and make it of any type (e.g. string by default).
Save the changes.
Now go to your project folder and open the "Properties\Settings.settings" file with text editor (Notepad, for example) Or you can open it in VS by right-clicking in Solution Explorer on ...