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Close and Dispose - which to call?
...ing that explicitly utilizes Open(), AFAIK.
– René Kåbis
Oct 1 '16 at 18:05
I'm not sure about other DBMS, but you c...
Hash collision in git
... no entry for a 40 character hash. But an interpolation of the entries for 32 and 48 characters lands us in the range of 5*1022 git commits for a 0.1% probability of a collision. That is fifty thousand billion billion different commits, or fifty Zettacommits, before you have reached even a 0.1% cha...
Why can't a text column have a default value in MySQL?
...w addition from a MySQL developer at MySQL Bugs:
[17 Mar 2017 15:11] Ståle Deraas
Posted by developer:
This is indeed a valid feature request, and at first glance it might seem trivial to add. But TEXT/BLOBS values are not stored directly in the record buffer used for reading/updating...
Can I use assert on Android devices?
... at a package level, or at a class level which enables assertions at that respective level. The flag is off by default, as a result of which the assertion checks are skipped.
I wrote the following code in my sample Activity:
public class AssertActivity extends Activity {
@Override
protected v...
Django rest framework, use different serializers in the same ModelViewSet
...ly different than the corresponding http methods.
– Håken Lid
Apr 21 '18 at 10:48
add a comm...
How do I protect Python code? [closed]
... your secrets and trying to protect against NSA-class reverse engineering. Esp if you have a big python code base and reasons to be paranoid. ;)
– Macke
Jan 8 '16 at 8:18
...
How to calculate the SVG Path for an arc (of a circle)
...nt svg element. For example viewBox="0 0 500 500"
– Håken Lid
May 24 '19 at 14:20
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What is the fastest way to compute sin and cos together?
...
.align 4,0x90
.globl _fsincos
_fsincos:
pushl %ebp
movl %esp, %ebp
fldl 12(%ebp)
fsincos
movl 8(%ebp), %eax
fstpl 8(%eax)
fstpl (%eax)
leave
ret $4
.subsections_via_symbols
Tada, it uses the fsincos instruction!
...
Performance of foreach, array_map with lambda and array_map with static function
...eed. It would be interesting to see the opcodes generated by this version, especially comparing with/without opcache since it does a lot of optimizations besides code caching.
– FGM
Jan 14 '17 at 16:04
...
C++ performance challenge: integer to std::string conversion
...
MB/s is a strange metric, especially seeing how you don't remove trailing whitespaces from the string in your implementations. My updated code runs faster than your implementation with x64 VC++ 2005 on Core i7 920 (16.2M ops/s vs. 14.8M ops/s), _ltoa ...