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undefined reference to boost::system::system_category() when compiling
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The boost library you are using depends on the boost_system library. (Not all of them do.)
Assuming you use gcc, try adding -lboost_system to your compiler command line in order to link against that library.
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How do I look inside a Python object?
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object.__dict__
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Shell script while read line loop stops after the first line
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The problem is that do_work.sh runs ssh commands and by default ssh reads from stdin which is your input file. As a result, you only see the first line processed, because ssh consumes the rest of the file and your while loop terminates.
To preve...
How do I get the dialer to open with phone number displayed?
... with back button after opening dialer in new intent. I can get back to my application only in 3 back button press (it shows me several screens of dialer which I didnt open - the dialer itself, create new contact screen, favourites). Does somebody knows how to get back to app with only 1 back button...
How to concatenate two MP4 files using FFmpeg?
...puts).
ffmpeg -i opening.mkv -i episode.mkv -i ending.mkv \
-filter_complex "[0:v] [0:a] [1:v] [1:a] [2:v] [2:a]
concat=n=3:v=1:a=1 [v] [a]" \
-map "[v]" -map "[a]" output.mkv
Note that this method performs a re-encode.
2. concat demuxer
Use this method wh...
Python: What OS am I running on?
...ion of Darwin that comes with Catalina 10.15.2: en.wikipedia.org/wiki/MacOS_Catalina#Release_history
– philshem
Aug 21 at 13:28
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How do I store data in local storage using Angularjs?
...rage. i use broadcast events to save and restore the values in the model.
app.factory('userService', ['$rootScope', function ($rootScope) {
var service = {
model: {
name: '',
email: ''
},
SaveState: function () {
sessionStorage.user...
Get the latest record from mongodb collection
...answered Feb 2 '14 at 21:28
dark_rubydark_ruby
6,00644 gold badges2626 silver badges5050 bronze badges
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Detect Browser Language in PHP
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why dont you keep it simple and clean
<?php
$lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
$acceptLang = ['fr', 'it', 'en'];
$lang = in_array($lang, $acceptLang) ? $lang : 'en';
require_once "index_{$lang}.php";
?>
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New Array from Index Range Swift
...gt; but is of type ArraySlice<Int>. That's because Array's subscript(_:) returns an ArraySlice<Element> that, according to Apple, presents a view onto the storage of some larger array.
Besides, Swift also provides Array an initializer called init(_:) that allows us to create a new...