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Logical operators for boolean indexing in Pandas
...s np.logical_and
or has np.logical_or
not has np.logical_not
numpy.logical_xor which has no Python equivalent but is a logical "exclusive or" operation
So, essentially, one should use (assuming df1 and df2 are pandas DataFrames):
np.logical_and(df1, df2)
np.logical_or(df1, df2)
np.logical_not(df...
What are bitwise operators?
...ns
00000001
which is not 0, so the flag does specify READ.
You can use XOR to toggle various bits. I've used this when using a flag to specify directional inputs (Up, Down, Left, Right). For example, if a sprite is moving horizontally, and I want it to turn around:
Up: 00000001
Down: ...
techniques for obscuring sensitive strings in C++
...e sure that the key is not within the printable range.
Obscuring key with XOR
For instance, you could use XOR to split the key into two byte arrays:
key = key1 XOR key2
If you create key1 with the same byte-length as key you can use (completely) random byte values and then compute key2:
key1[n...
Sort points in clockwise order?
... xmm4, xmm0, xmm2
vmovss xmm0, DWORD PTR [edx+4]
push ebx
xor ebx, ebx
vxorps xmm3, xmm3, xmm3
vcomiss xmm4, xmm3
vsubss xmm5, xmm0, xmm1
seta bl
xor ecx, ecx
vcomiss xmm5, xmm3
push esi
seta cl
; 30 : const int qa = (1 - dax) + (1 - ...
Code Golf - π day
...: 490 chars
mov si,80h
mov cl,[si]
jcxz ret
mov bx,10
xor ax,ax
xor bp,bp
dec cx
a:mul bx
mov dl,[si+2]
sub dl,48
cmp dl,bl
jae ret
add ax,dx
inc si
loop a
mov dl,al
inc dl
mov dh,al
add dh,dh
mov ch,dh
mul al
mov...
Wolfram's Rule 34 in XKCD [closed]
...gt; 1
You can do all of this with a single "color" of comparing (like an XOR circuit for example) and even merge this operation with the write operation. Then by keeping 2 control bits somewhere (o and 1 at the beginning of your memory) you can accomplish writing a plain 0 or 1 by comparing those ...
jQuery OR Selector?
...
The term 'xor' (exclusive or) would be the accurate term, but often people search for or when looking for xor, as xor is generally, in common terms, a specific type of 'or'.
– liljoshu
Jan 23 '19 ...
What are the most interesting equivalences arising from the Curry-Howard Isomorphism?
...k I see it. That seems to interact rather oddly with my definition of the Xor type… I'll have to think about that. Thanks!
– Antal Spector-Zabusky
Jun 3 '10 at 22:54
...
Show current assembly instruction in GDB
...<exit> │
│0x7ffff740d774 <__libc_start_main+244> xor %edx,%edx │
│0x7ffff740d776 <__libc_start_main+246> jmpq 0x7ffff740d6b9 <__libc_start│
│0x7ffff740d77b <__libc_start_main+251> mov 0x39ca2e(%rip),%rax #│
...
Why would finding a type's initializer throw a NullReferenceException?
...e`8d4500fb 41b903000000 mov r9d,3
000007fe`8d450101 4533c0 xor r8d,r8d
000007fe`8d450104 ba38000000 mov edx,38h
000007fe`8d450109 498bcb mov rcx,r11
000007fe`8d45010c 41ff5228 call qword ptr [r10+28h]
000007fe`8d450110 48bb1032531200000000 mov rbx,...