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C++ : why bool is 8 bits long?
...or booleans, in a way. I seem to remember Pascal implementing sets as bit strings. That is, for the following set:
{1, 2, 5, 7}
You might have this in memory:
01100101
You can, of course, do something similar in C / C++ if you want. (If you're keeping track of a bunch of booleans, it could ...
Calculate MD5 checksum for a file
...terested in comparing the hashes.)
If you need to represent the hash as a string, you could convert it to hex using BitConverter:
static string CalculateMD5(string filename)
{
using (var md5 = MD5.Create())
{
using (var stream = File.OpenRead(filename))
{
var ha...
How do I match any character across multiple lines in a regular expression?
... base R default engine with no perl=TRUE, for base R with perl=TRUE or for stringr/stringi patterns, use the (?s) inline modifier) (demo) also treat . the same way.
However, most POSIX based tools process input line by line. Hence, . does not match the line breaks just because they are not in sco...
How to get the first five character of a String
I have read this question to get first char of the string. Is there a way to get the first n number of characters from a string in C#?
...
Java executors: how to be notified, without blocking, when a task completes?
...blic class GetTaskNotificationWithoutBlocking {
public static void main(String... argv) throws Exception {
ExampleService svc = new ExampleService();
GetTaskNotificationWithoutBlocking listener = new GetTaskNotificationWithoutBlocking();
CompletableFuture<String> f = Completable...
通过API获取IP信息、IP归属地 - 更多技术 - 清泛网 - 专注C/C++及内核技术
通过API获取IP信息、IP归属地开发网站时有时需要获取用户IP地址相应的归属地信息，如ip所属区域、运营商等。一般采取调用第三方api的方式来获取ip信息，本文对常用的api做一个总结。一、淘宝API接口：http://ip.taobao.com/service/get...
How can I change the color of AlertDialog title and the color of the line under it
...erent color for the title or divider, you use the following code:
private String HALLOWEEN_ORANGE = "#FF7F27";
QustomDialogBuilder qustomDialogBuilder = new QustomDialogBuilder(v.getContext()).
setTitle("Set IP Address").
setTitleColor(HALLOWEEN_ORANGE).
setDividerColor(HALLOWEEN_ORANG...
Is GET data also encrypted in HTTPS?
...
The URL itself is encrypted, so the parameters in the query string do not travel in plain across the wire.
However, keep in mind that URLs including the GET data are often logged by the webserver, whereas POST data seldom is. So if you're planning to do something like /login/?usernam...
What is the maximum length of a URL in different browsers?
...ails
C# part:
[AcceptVerbs(HttpVerbs.Get)]
public ActionResult ParamTest(string x)
{
ViewBag.TestLength = 0;
if (!string.IsNullOrEmpty(x))
{
System.IO.File.WriteAllLines("c:/result.txt",
new[] {Request.UserAgent, x.Length.ToString()});
ViewBag.Tes...
Why is a boolean 1 byte and not 1 bit of size?
...Obviously, such a pointer would not be convertible to void* because of the extra storage requirement for the bit number.
– Maxim Egorushkin
Jan 7 '11 at 17:10
...