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How to get the client IP address in PHP [duplicate]
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answered Jun 9 '10 at 5:15
Emil VikströmEmil Vikström
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Log to the base 2 in python
...ity, so log₂31 is 4 not 5. log₂(1/17) is -5 not -4.
int → int x.bit_length()
If both input and output are integers, this native integer method could be very efficient:
log2int_faster = x.bit_length() - 1
- 1 because 2ⁿ requires n+1 bits. Works for very large integers, e.g. 2**10000...
Combining C++ and C - how does #ifdef __cplusplus work?
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answered Sep 24 '10 at 17:32
Andrew ShelanskyAndrew Shelansky
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Abstract methods in Python [duplicate]
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edited Dec 8 '10 at 0:32
answered Dec 8 '10 at 0:02
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Named routes _path vs _url
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– Chris Peters
Aug 13 '12 at 19:10
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How to select a single field for all documents in a MongoDB collection?
In my MongoDB, I have a student collection with 10 records having fields name and roll . One record of this collection is:
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Using IPython notebooks under version control
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answered Sep 10 '14 at 12:13
Rich SignellRich Signell
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What does the “at” (@) symbol do in Python?
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answered Feb 10 '13 at 15:47
Matheus AraujoMatheus Araujo
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Can “list_display” in a Django ModelAdmin display attributes of ForeignKey fields?
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edited Jul 25 '14 at 16:10
Denilson Sá Maia
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How to generate an openSSL key using a passphrase from the command line?
...read it from a file using -in <file>).
Example of creating a 3072-bit private and public key pair in files, with the private key pair encrypted with password foobar:
openssl genrsa -aes128 -passout pass:foobar -out privkey.pem 3072
openssl rsa -in privkey.pem -passin pass:foobar -pubout -o...