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How to properly check if std::function is empty in C++11?
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Check here http://www.cplusplus.com/reference/functional/function/operator_bool/
Example
// function::operator bool example
#include <iostream> // std::cout
#include <functional> // std::function, std::plus
int main (...
How to enter command with password for git pull?
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This is not exactly what you asked for, but for http(s):
you can put the password in .netrc file (_netrc on windows). From there it would be picked up automatically. It would go to your home folder with 600 permissions.
you could also just clone the repo with https://use...
Get Android .apk file VersionName or VersionCode WITHOUT installing apk
...lagged for upgrade/installation.
#/system/bin/sh
SERVER_LIST=$(wget -qO- "http://demo.server.com/apk/" | grep 'href' | grep '\.apk' | sed 's/.*href="//' | \
sed 's/".*//' | grep -v '\/' | sed -E "s/%/\\\\x/g" | sed -e "s/x20/ /g" -e "s/\\\\//g")
LOCAL_LIST=$(for APP in $(pm list packa...
Why can't strings be mutable in Java and .NET?
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There are at least two reasons.
First - security http://www.javafaq.nu/java-article1060.html
The main reason why String made
immutable was security. Look at this
example: We have a file open method
with login check. We pass a String to
this method to process aut...
Handling very large numbers in Python
...n these foruns: OverflowError: (34, 'Result too large')
Another reference: http://docs.python.org/2/library/decimal.html
You can even using the gmpy module if you need a speed-up (which is likely to be of your interest): Handling big numbers in code
Another reference: https://code.google.com/p/gmpy/...
ADB Shell Input Events
... "KEYCODE_MOVE_END"
The complete list of commands can be found on:
http://developer.android.com/reference/android/view/KeyEvent.html
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How to detect if JavaScript is disabled?
...it redirects a visitor if javascript is disabled
<noscript><meta http-equiv="refresh" content="0; url=whatyouwant.html" /></noscript>
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How Scalable is SQLite? [closed]
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Have you read this SQLite docs - http://www.sqlite.org/whentouse.html ?
SQLite usually will work great as the
database engine for low to medium
traffic websites (which is to say,
99.9% of all websites). The amount of web traffic that SQLite can han...
How can I get sin, cos, and tan to use degrees instead of radians?
...onversion function that applies the needed math, and invoke those instead. http://en.wikipedia.org/wiki/Radian#Conversion_between_radians_and_degrees
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Pandas selecting by label sometimes return Series, sometimes returns DataFrame
... remove objects from these
containers in a dictionary-like fashion.
http://pandas.pydata.org/pandas-docs/stable/overview.html#why-more-than-1-data-structure
The data model of Pandas objects has been choosen like that. The reason certainly lies in the fact that it ensures some advantages I d...