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'setInterval' vs 'setTimeout' [duplicate]
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setInterval()
setInterval is a time interval based code execution method that has the native ability to repeatedly run specified script when the interval is reached. It should not be nested into its callback function by the script author to make it loop, since it loops ...
How do I force Postgres to use a particular index?
...g you're asking about the common "index hinting" feature found in many databases, PostgreSQL doesn't provide such a feature. This was a conscious decision made by the PostgreSQL team. A good overview of why and what you can do instead can be found here. The reasons are basically that it's a performa...
HMAC-SHA1 in bash
... in this example, what is the encoding / format of the key? Should it be a base64 encoding like a private key created using openssl genrsa? Also, the openssl documentation link results in a 404.
– Carlos Macasaet
Aug 18 '15 at 5:07
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Crop MP3 to first 30 seconds
... does not transcode. It is lightning fast.
NOTE: the command was updated based on comment from Oben Sonne
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Is the pImpl idiom really used in practice?
...ing compilation) is lost.
Is a good paradigm for classic OOP (inheritance based) but not for generic programming (specialization based).
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How to use the same C++ code for Android and iOS?
...lementation:
#include <string.h>
#include "Core.h"
const char *CPP_BASE_STRING = "cpp says hello to %s";
const char *concatenateMyStringWithCppString(const char *myString) {
char *concatenatedString = new char[strlen(CPP_BASE_STRING) + strlen(myString)];
sprintf(concatenatedString, ...
Difference between a Structure and a Union
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@user12345613 unions can be used as a sort of base class for structs. You can emulate an OO hierarchy using unions of structs
– Morten Jensen
Mar 12 '13 at 21:57
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Faye vs. Socket.IO (and Juggernaut)
... WebSocket dies.
Please correct me if I've got any of this wrong - this is based on a cursory scan of the Socket.IO documentation.
Faye is just pub/sub, it's just based on a slightly more complex protocol and has a lot of niceties built in:
Server- and client-side extensions
Wildcard pattern-matc...
How can I get dictionary key as variable directly in Python (not by searching from value)?
... this are not turning up anything other than how to get a dictionary's key based on its value which I would prefer not to use as I simply want the text/name of the key and am worried that searching by value may end up returning 2 or more keys if the dictionary has a lot of entries... what I am tryin...
Hashing a dictionary?
...nto nested tuples and make_hash_sha256() will also convert the repr() to a base64 encoded SHA256 hash.
import hashlib
import base64
def make_hash_sha256(o):
hasher = hashlib.sha256()
hasher.update(repr(make_hashable(o)).encode())
return base64.b64encode(hasher.digest()).decode()
def m...