大约有 40,000 项符合查询结果（耗时：0.0399秒） [XML]
Calculating Distance between two Latitude and Longitude GeoCoordinates
...atic double DistanceTo(double lat1, double lon1, double lat2, double lon2, char unit = 'K')
{
double rlat1 = Math.PI*lat1/180;
double rlat2 = Math.PI*lat2/180;
double theta = lon1 - lon2;
double rtheta = Math.PI*theta/180;
double dist =
Math.Sin(rlat1)*Math.Sin(rlat2) + M...
Stop the 'Ding' when pressing Enter
...ecutes. The only thing that happens is all the Text in the TextBox becomes selected (and I don't even have code that selects any text)
– bendr
Jun 9 '11 at 10:15
1
...
What is Type-safe?
.... Memory** and data type (with its corresponding operations).
Memory**
A char typically requires 1 byte per character, or 8 bits (depends on language, Java and C# store unicode chars which require 16 bits).
An int requires 4 bytes, or 32 bits (usually).
Visually:
char: |-|-|-|-|-|-|-|-|
int : |...
How do I get the path of a process in Unix / Linux
...swers were specific to linux.
If you need also unix, then you need this:
char * getExecPath (char * path,size_t dest_len, char * argv0)
{
char * baseName = NULL;
char * systemPath = NULL;
char * candidateDir = NULL;
/* the easiest case: we are in linux */
size_t buff_len;
...
Good ways to manage a changelog using git?
...te a GNU-style ChangeLog.
As shown by gitlog-to-changelog --help, you may select the commits used to generate a ChangeLog file using either the option --since:
gitlog-to-changelog --since=2008-01-01 > ChangeLog
or by passing additional arguments after --, which will be passed to git-log (call...
Django template tag to truncate text
... cuts the text at the given word count. But there is nothing like truncatechars .
9 Answers
...
.NET - How can you split a “caps” delimited string into an array?
...ut.Skip(1))
).ToArray());
}
private static IEnumerable<char> InsertSpacesBeforeCaps(IEnumerable<char> input)
{
foreach (char c in input)
{
if (char.IsUpper(c))
{
yield return ' ';
}
y...
Regular expressions in C: examples?
...based on this):
#include <regex.h>
regex_t regex;
int reti;
char msgbuf[100];
/* Compile regular expression */
reti = regcomp(&regex, "^a[[:alnum:]]", 0);
if (reti) {
fprintf(stderr, "Could not compile regex\n");
exit(1);
}
/* Execute regular expression */
reti = regexec...
What does a type followed by _t (underscore-t) represent?
... could cause some confusion. As well as size_t, the C89 standard defines wchar_t, off_t, ptrdiff_t, and probably some others I've forgotten. The C99 standard defines a lot of extra types, such as uintptr_t, intmax_t, int8_t, uint_least16_t, uint_fast32_t, and so on. These new types are formally d...
Is there common street addresses database design for all addresses of the world? [closed]
... lots of fields if you really want to be generic.
The UPU Universal Postal Union provides address data for lots of countries in a standard format. Note that the UPU format holds all addresses (down to the available field precision) for a whole country, it is therefore relational. If storing customer...