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How does push notification technology work on Android?
...hone, used by all apps: installing a new app that uses GCM doesn't add any extra load.
The first step in GCM is that a third-party server (such as an email server) sends a request to Google's GCM server. This server then sends the message to your device, through that open connection. The Android sy...
How does MySQL process ORDER BY and LIMIT in a query?
...t used it in a production environment, but now when I bench marked it, the extra sorting does not impact the performance.
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How do I use the conditional operator (? :) in Ruby?
..." : "false" then expected puts to return the boolean which then became the string value.
– Fresheyeball
Aug 25 '15 at 23:16
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Max return value if empty query
...tion "Sequence contains no elements"
class Program
{
static void Main(string[] args)
{
List<MyClass> list = new List<MyClass>();
list.Add(new MyClass() { Value = 2 });
IEnumerable<MyClass> iterator = list.Where(x => x.Value == 3); // empty iter...
Comma separator for numbers in R?
... comment:
Be aware that these have the side effect of padding the printed strings with blank space, for example:
> prettyNum(c(123,1234),big.mark=",")
[1] " 123" "1,234"
Add trim=TRUE to format or preserve.width="none" to prettyNum to prevent this:
> prettyNum(c(123,1234),big.mark=",", ...
Is it possible to use a div as content for Twitter's Popover
...d content data will be applied as text
if html allowed and content data is string it will be applied as html
otherwise content data will be appended to popover's content container
$("#popover-button").popover({
content: $("#popover-content"),
html: true,
title: "Popover title"
});
...
scheduleAtFixedRate vs scheduleWithFixedDelay
...
I could not understand the "extra" word mentioned in scheduleAtFixedRate time series diagram.
– MuneshSingh
Mar 25 '18 at 6:39
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RAII and smart pointers in C++
...ance (and stealing an example from another answer):
void foo() {
std::string str;
// Do cool things to or using str
}
This works fine - but what if we want to return str? We could write this:
std::string foo() {
std::string str;
// Do cool things to or using str
return str;
}...
Tool to generate JSON schema from JSON data [closed]
...It is an online tool that can automatically generate JSON schema from JSON string. And you can edit the schema easily.
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Adjust width of input field to its input
... of the character "m". This would be useful for calculating the width of a string. I've seen cross-browser issues with em units applied to some attributes though so do test it.
– Archonic
Apr 4 '13 at 4:46
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