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Difference between Math.Floor() and Math.Truncate()
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64
Math.Floor() rounds toward negative infinity
Math.Truncate rounds up or down towards zero.
F...
Sort objects in ArrayList by date?
...ist when it's done or something like that?
– user393964
May 8 '11 at 11:42
It modifiies myList. So its sorted when it ...
Import Error: No module named numpy
...d. I have only one version of Python 3 installed on my Windows 7 ( sorry ) 64-bit system.
24 Answers
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Format a datetime into a string with milliseconds
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64
With Python 3.6 you can use:
from datetime import datetime
datetime.utcnow().isoformat(sep=' '...
'pip' is not recognized as an internal or external command
...system settings>advanced>environment variables. I am using Windows 8 64bit. Thanks!
– Mohammed
Jan 4 '15 at 17:19
1
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How can I check which version of Angular I'm using?
...t something like this:
angular-cli: 1.0.0-beta.24
node: 7.4.0
os: darwin x64
@angular/common: 2.4.3
@angular/compiler: 2.4.3
@angular/core: 2.4.3
@angular/forms: 2.4.3
@angular/http: 2.4.3
@angular/platform-browser: 2.4.3
@angular/platform-browser-dynamic: 2.4.3
@angular/router: 3.4.3
@angular/comp...
Convert Year/Month/Day to Day of Year in Python
...want to present performance of different approaches, on Python 3.4, Linux x64. Excerpt from line profiler:
Line # Hits Time Per Hit % Time Line Contents
==============================================================
(...)
823 1508 11334 ...
Read only file system on Android
...esn't work for me: Balazss-MBP:tools varh1i$ adb shell generic_x86_64:/ # mount -o rw,remount /system '/dev/block/vda' is read-only
– Balazs Varhegyi
Feb 8 '17 at 13:58
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Best way to convert strings to symbols in hash
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64
Even more terse:
Hash[my_hash.map{|(k,v)| [k.to_sym,v]}]
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Secure hash and salt for PHP passwords
...n't mix bcrypt and with the raw output of hash(), either use hex output or base64_encode it. (This applies to any input that may have a rogue \0 in it, which can seriously weaken security.)
Dos
Use scrypt when you can; bcrypt if you cannot.
Use PBKDF2 if you cannot use either bcrypt or scrypt, w...