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How to sum up elements of a C++ vector?
...
Actually there are quite a few methods.
int sum_of_elems = 0;
C++03
Classic for loop:
for(std::vector<int>::iterator it = vector.begin(); it != vector.end(); ++it)
sum_of_elems += *it;
Using a standard algorithm:
#include <numeric>
sum_of_elems...
How to run an EXE file in PowerShell with parameters with spaces and quotes
...s in a .bat file? I'm trying & 'C:\Program Files\Sublime Text 3\sublime_text.exe' directly in the console and it's working, but in a batch file I get an error saying '& was unexpected at this time.'
– Joe Zim
Jun 30 '14 at 4:33
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Could not calculate build plan: Plugin org.apache.maven.plugins:maven-resources-plugin:2.5 or one of
...ained the proxy settings (settings.xml can exist in two places one in MAVEN_HOME. The other in %userprofile%.m2\ with the later having higher precedence):
<proxy>
<id>optional</id>
<active>true</active>
<protocol>http</protocol>
<username>opti...
What is the difference between Reader and InputStream?
...s.
Reader reader = new InputStreamReader(inputStream, StandardCharsets.UTF_8);
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What does $(function() {} ); do?
...thand for $(document).ready(), as in: $(document).ready(function() {
YOUR_CODE_HERE
});. Sometimes you have to use it because your function is running before the DOM finishes loading.
Everything is explained here: http://docs.jquery.com/Tutorials:Introducing_$(document).ready()
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How can I use mySQL replace() to replace strings in multiple records?
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UPDATE some_table SET some_field = REPLACE(some_field, '&lt;', '<')
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Should I use an exception specifier in C++?
...t really know what it might do when something goes horribly wrong.
int lib_f();
void g() throw( k_too_small_exception )
{
int k = lib_f();
if( k < 0 ) throw k_too_small_exception();
}
g will terminate, when lib_f() throws. This is (in most cases) not what you really want. std::terminat...
How to get a one-dimensional scalar array as a doctrine dql query result?
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PHP < 5.5
You can use array_map, and since you only have on item per array, you can elegantly use
'current' as callback, instead of writing a closure.
$result = $em->createQuery("SELECT a.id FROM Auction a")->getScalarResult();
$ids = array_map...
Provide an image for WhatsApp link sharing
...;meta property="og:image" content="//cdn.example.com/uploads/images/webpage_300x200.png">
* @RichDeBourke mentioned this to me, but apparently WhatsApp has increased its maximum image size (dimensions as well as file size). I did some tests: it does not work consistently every time on every devi...
How to find out element position in slice?
...check if container has an element you can just if element in collection: do_something()
– OCyril
Nov 29 '11 at 18:26
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