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This is another solution for folks who love recursion.

The idea is simple. Divide up input by half and swap the two halves, continue until it reaches single bit.

***Illustrated in the example below.

Ex : If Input is 00101010 ==> Expected output is 01010100

1. Divide the input into 2 halves
0010 --- 1010

2. Swap the 2 Halves
1010 0010

3. Repeat the same for each half.
10 -- 10 --- 00 -- 10
10 10 10 00

1-0 -- 1-0 --- 1-0 -- 0-0
0 1 0 1 0 1 0 0

Done! Output is 01010100***
Here is a recursive function to solve it. (Note I have used unsigned ints, so it can work for inputs up to sizeof(unsigned int)*8 bits.

The recursive function takes 2 parameters - The value whose bits need to be reversed and the number of bits in the value.

***int reverse_bits_recursive(unsigned int num, unsigned int numBits)
{
unsigned int reversedNum;;
unsigned int mask = 0;

mask = (0x1 << (numBits/2)) - 1;

if (numBits == 1) return num;
reversedNum = reverse_bits_recursive(num >> numBits/2, numBits/2) |
reverse_bits_recursive((num & mask), numBits/2) << numBits/2;
return reversedNum;
}

int main()
{
unsigned int reversedNum;
unsigned int num;

num = 0x55;
reversedNum = reverse_bits_recursive(num, 8);
printf ("Bit Reversal Input = 0x%x Output = 0x%x\n", num, reversedNum);

num = 0xabcd;
reversedNum = reverse_bits_recursive(num, 16);
printf ("Bit Reversal Input = 0x%x Output = 0x%x\n", num, reversedNum);

num = 0x123456;
reversedNum = reverse_bits_recursive(num, 24);
printf ("Bit Reversal Input = 0x%x Output = 0x%x\n", num, reversedNum);

num = 0x11223344;
reversedNum = reverse_bits_recursive(num,32);
printf ("Bit Reversal Input = 0x%x Output = 0x%x\n", num, reversedNum);
}
This is the output:

Bit Reversal Input = 0x55 Output = 0xaa
Bit Reversal Input = 0xabcd Output = 0xb3d5
Bit Reversal Input = 0x123456 Output = 0x651690
Bit Reversal Input = 0x11223344 Output = 0x22cc4488***
4 years ago
If this is what you mean, you can simply extend the class you would like to typedef, e.g.:

***public class MyMap extends HashMap {}***
4 years ago
It has already been stated that the **extern** keyword is redundant for functions.

As for variables shared across compilation units, you should declare them in a header file with the extern keyword, then define them in a single source file, without the extern keyword. The single source file should be the one sharing the header file's name, for best practice.
4 years ago
No need to be complex. The simplest and framework manner is to use **ACCESS_NETWORK_STATE** permission and just make a connected method

***public boolean isOnline() {
ConnectivityManager cm =
(ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);

return cm.getActiveNetworkInfo() != null &&
cm.getActiveNetworkInfo().isConnectedOrConnecting();
}***
You can also use **requestRouteToHost** if you have a particualr host and connection type (wifi/mobile) in mind.

You will also need:

******
in your android manifest.
4 years ago
I check for both Wi-fi and Mobile internet as follows...

***private boolean haveNetworkConnection() {
boolean haveConnectedWifi = false;
boolean haveConnectedMobile = false;

ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo[] netInfo = cm.getAllNetworkInfo();
for (NetworkInfo ni : netInfo) {
if (ni.getTypeName().equalsIgnoreCase("WIFI"))
if (ni.isConnected())
haveConnectedWifi = true;
if (ni.getTypeName().equalsIgnoreCase("MOBILE"))
if (ni.isConnected())
haveConnectedMobile = true;
}
return haveConnectedWifi || haveConnectedMobile;
}***
4 years ago
In the AndroidManifest I found this parameter:

***android:networkSecurityConfig="@xml/network_security_config"***

and @xml/network_security_config is defined in network_security_config.xml as:

***



***
just I changed cleartextTrafficPermitted to true
4 years ago
The content is put after the HTTP headers. The format of an HTTP POST is to have the HTTP headers, followed by a blank line, followed by the request body. The POST variables are stored as key-value pairs in the body.

You can see this in the raw content of an HTTP Post, shown below:

***POST /path/script.cgi HTTP/1.0
From: xyz@abc.com
User-Agent: HTTPTool/1.0
Content-Type: application/x-www-form-urlencoded
Content-Length: 32

home=Cosby&favorite+flavor=flies***
4 years ago
***SELECT COUNT(DISTINCT program_name) AS Count, program_type AS [Type]
FROM cm_production
WHERE push_number=@push_number
GROUP BY program_type***
4 years ago
If you have no references, like foreign keys, you can do this. I do it a lot when testing proofs of concept and the test data gets duplicated.

***SELECT DISTINCT [col1],[col2],[col3],[col4],[col5],[col6],[col7]

INTO [newTable]

FROM [oldTable]***

Go into the object explorer and delete the old table.

Rename the new table with the old table's name.
4 years ago
HTML
***
<%# (Eval("Name").ToString().Length > 65) ? Eval("Name").ToString().Substring(0, 60) + "..." : Eval("Name")%>

<%# (Eval("Name").ToString().Length > 65) ? "More" : "" %>

<%# Eval("Name") %>


***

CSS

***.showonhover .hovertext { display: none;}
.showonhover:hover .hovertext {display: inline;}
a.viewdescription {color:#999;}
a.viewdescription:hover {background-color:#999; color: White;}
.hovertext {position:absolute;z-index:1000;border:1px solid #ffd971;background-color:#fffdce;padding:11px;width:150px;font-size: 0.75em;}***
4 years ago
You can try this:

***var results = from c in db.Companies
join cn in db.Countries on c.CountryID equals cn.ID
join ct in db.Cities on c.CityID equals ct.ID
join sect in db.Sectors on c.SectorID equals sect.ID
where (c.CountryID == cn.ID) && (c.CityID == ct.ID) && (c.SectorID == company.SectorID) && (company.SectorID == sect.ID)
select new { country = cn.Name, city = ct.Name, c.ID, c.Name, c.Address1, c.Address2, c.Address3, c.CountryID, c.CityID, c.Region, c.PostCode, c.Telephone, c.Website, c.SectorID, Status = (ContactStatus)c.StatusID, sector = sect.Name };


return results.ToList();***
4 years ago
**Trigger** and **Sequence** can be used when you want serialized number that anyone can easily read/remember/understand. But if you don't want to manage ID Column (like emp_id) by this way, and value of this column is not much considerable, you can use **SYS_GUID()** at Table Creation to get Auto Increment like this.

***CREATE TABLE
(emp_id RAW(16) DEFAULT SYS_GUID() PRIMARY KEY,
name VARCHAR2(30));***

Now your **emp_id** column will accept "globally unique identifier value". you can insert value in table by ignoring emp_id column like this.

***INSERT INTO (name) VALUES ('name value');***

So, it will insert unique value to your **emp_id** Column.
4 years ago