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Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Difference between int32, int, int32_t, int8 and int8_t
...t.h header file that essentially leverages similar typedefs.
On a windows based system, you may see entries in stdin.h header file as
typedef signed char int8_t;
typedef signed short int16_t;
typedef signed int int32_t;
typedef unsigned char uint8_t;
There is quite more...
How to escape a JSON string to have it in a URL?
...n handy in certain situations.
Rather than URL-encoding the data, you can base64-encode it. The benefit of this is the encoded data is very generic, consisting only of alpha characters and sometimes trailing ='s. Example:
JSON array-of-strings:
["option", "Fred's dog", "Bill & Trudy", "param...
Removing packages installed with go get
...ts of standard library archive files!
A complete example, which you could base a script on if you like:
$ go get -u github.com/motemen/gore
$ which gore
/Users/ches/src/go/bin/gore
$ go clean -i -n github.com/motemen/gore...
cd /Users/ches/src/go/src/github.com/motemen/gore
rm -f gore gore.exe g...
Is the sizeof(some pointer) always equal to four?
...he code you have. Also, not all 32 bit architectures – certainly not all based on the x86 – use a flat memory model. See, e.g., tenouk.com/Bufferoverflowc/Bufferoverflow1a.html for some more discussion around this, although, as I said, it’s been a while and I cannot vouch for anything.
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ASP.NET MVC on IIS 7.5
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This was my problem too. I never would have guessed based on the 403 symptom that my application was missing the Global.asax
– Saul Dolgin
Jun 28 '13 at 13:09
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What's the difference between a single precision and double precision floating point operation?
...antissa will always be in the form
0.α1α2...αt × βp
where β is the base of representation. But since the fraction is a binary number, α1 will always be equal to 1, thus the fraction can be rewritten as 1.α2α3...αt+1 × 2p and the initial 1 can be implicitly assumed, making room for an ex...
converting Java bitmap to byte array
... to encode bitmap into byte[] and vice versa
public static String encodeTobase64(Bitmap image) {
Bitmap immagex = image;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
immagex.compress(Bitmap.CompressFormat.PNG, 90, baos);
byte[] b = baos.toByteArray();
String imageEn...
What represents a double in sql server?
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I have to concur, and admit I was off base. I was introduced to decimal in the IBM DB2 world, where decimal is a real data type, supported by all flavors of code and the database on IBM platforms. Not that it isn't a real datatype in the MS world, but it is not...
Position icons into circle
...e ON the circle */
- let tan = Math.tan(Math.PI/m); /* tangent of half the base angle */
.container(style=`--m: ${m}; --tan: ${+tan.toFixed(2)}`)
- for(let i = 0; i < n_imgs; i++)
a(href='#' style=i - has_mid >= 0 ? `--i: ${i}` : null)
img(src=imgs[i].src alt=imgs[i].alt...