大约有 40,000 项符合查询结果（耗时：0.0653秒） [XML]
What is the difference between MOV and LEA?
...
In NASM syntax:
mov eax, var == lea eax, [var] ; i.e. mov r32, imm32
lea eax, [var+16] == mov eax, var+16
lea eax, [eax*4] == shl eax, 2 ; but without setting flags
In MASM syntax, use OFFSET var to get a mov-immediate instead of a load.
...
Encoding an image file with base64
...long the lines of:
import base64
with open("yourfile.ext", "rb") as image_file:
encoded_string = base64.b64encode(image_file.read())
You have to open the file first of course, and read its contents - you cannot simply pass the path to the encode function.
Edit:
Ok, here is an update after y...
Remove all the children DOM elements in div
...
answered Mar 2 '10 at 17:32
Brian CBrian C
42744 silver badges99 bronze badges
...
Sorting list based on values from another list?
...
Shortest Code
[x for _,x in sorted(zip(Y,X))]
Example:
X = ["a", "b", "c", "d", "e", "f", "g", "h", "i"]
Y = [ 0, 1, 1, 0, 1, 2, 2, 0, 1]
Z = [x for _,x in sorted(zip(Y,X))]
print(Z) # ["a", "d", "h", "b", "c", "e", "i", "f"...
What generates the “text file busy” message in Unix?
...tanding the underlying API to better see what is going on.
sleep.c
#define _XOPEN_SOURCE 700
#include <unistd.h>
int main(void) {
sleep(10000);
}
busy.c
#define _XOPEN_SOURCE 700
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <sys/types.h>
#inc...
Comments in Android Layout xml
...hem inside tags
<EditText <!--This is not valid--> android:layout_width="fill_parent" />
share
|
improve this answer
|
follow
|
...
Check if string contains only whitespace
How can I test if a string contains only whitespace?
11 Answers
11
...
Django South - table already exists
...
Although the table "myapp_tablename" already exists error stop raising
after I did ./manage.py migrate myapp --fake, the DatabaseError shows
no such column: myapp_mymodel.added_field.
Got exactly the same problem!
1.Firstly check the migration...
PHP Fatal error: Call to undefined function json_decode()
...|
edited Mar 11 '14 at 23:32
answered Feb 20 '14 at 11:10
m...
Why is pow(a, d, n) so much faster than a**d % n?
... +1 that's actually what the docstring implies >>> print pow.__doc__ pow(x, y[, z]) -> number With two arguments, equivalent to x**y. With three arguments, equivalent to (x**y) % z, but may be more efficient (e.g. for longs).
– Hedde van der Heide
...