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How to sum up elements of a C++ vector?
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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 &l...
jQuery changing style of HTML element
...nce, that's when you would add the curly braces (for object notation), and it would look something like this (if you wanted to change, say, 'background-color' and 'position' in addition to 'display'):
$('#navigation ul li').css({'display': 'inline-block', 'background-color': '#fff', 'position': 're...
Draw on HTML5 Canvas using a mouse
...lag = false;
var x = "black",
y = 2;
function init() {
canvas = document.getElementById('can');
ctx = canvas.getContext("2d");
w = canvas.width;
h = canvas.height;
canvas.addEventListener("mousemove", function (e) {
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How do I update the notification text for a foreground service in Android?
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I would think that calling startForeground() again with the same unique ID and a Notification with the new information would work, though I have not tried this scenario.
Update: Based on the comments, you should use NotifcationManager to update the notification and your servi...
Making text background transparent but not text itself
...e background of my body transparent but leave the text non transparent. As it is right now I keep making both the same opacity. Here is my code:
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How can I add an ampersand for a value in a ASP.net/C# app config file value
I've got a C# program with values in a config file. What I want is to store ampersands for an url value like...
4 Answers
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How do disable paging by swiping with finger in ViewPager but still be able to swipe programmaticall
I have ViewPager and below it I have 10 buttons. By clicking on button, for example #4, the pager goes immediately to page #4 by mPager.setCurrentItem(3); . But, I want to disable the paging by swiping with finger horizontally. Thus, the paging is done ONLY by clicking on the buttons.
So, how I ...
Git interactive rebase no commits to pick
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Like a non-interactive rebase, you have to rebase onto a particular commit.
With a non-interactive rebase, if you supply a direct ancestor of the current commit then you aren't changing anything; with an interactive rebase you can edit commits after the commit that you are rebasing onto, even if...
Provide an image for WhatsApp link sharing
How can we include an image in our website to display in WhatsApp when we share a link like this?
19 Answers
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MySQL CONCAT returns NULL if any field contain NULL
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convert the NULL values with empty string by wrapping it in COALESCE
SELECT CONCAT(COALESCE(`affiliate_name`,''),'-',COALESCE(`model`,''),'-',COALESCE(`ip`,''),'-',COALESCE(`os_type`,''),'-',COALESCE(`os_version`,'')) AS device_name
FROM devices
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