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Optimal way to concatenate/aggregate strings
...rder to make this query predictable one has to define both grouping (for example, in your scenario rows with the same ID are concatenated) and sorting (I assumed that you simply sort the string alphabetically before concatenation).
I've quickly tested the solution on SQL Server 2012 with the follow...
Twig ternary operator, Shorthand if-then-else
...
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Converting file size in bytes to human-readable string
...h;
++u;
} while (Math.round(Math.abs(bytes) * r) / r >= thresh && u < units.length - 1);
return bytes.toFixed(dp) + ' ' + units[u];
}
console.log(humanFileSize(5000, true)) // 5.0 kB
console.log(humanFileSize(5000, false)) // 4.9 KiB
console.log(humanFileSize(-...
Matplotlib different size subplots
I need to add two subplots to a figure. One subplot needs to be about three times as wide as the second (same height). I accomplished this using GridSpec and the colspan argument but I would like to do this using figure so I can save to PDF. I can adjust the first figure using the figsize ar...
How to upgrade Git to latest version on macOS?
...brew/install/master/install)"
Or update if you already have
$ brew update && brew upgrade
Install Git with Homebrew
$ brew install git
Symbolic link
$ brew link --force git
Quit terminal and open a new terminal, then check version.
$ git --version
You should see…
git version <latest ver...
Detect the Enter key in a text input field
...ry:
$(document).keyup(function(event) {
if ($(".input1").is(":focus") && event.key == "Enter") {
// Do work
}
});
Mozilla Docs
Supported Browsers
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What is the difference between Flex/Lex and Yacc/Bison?
...it can do.
You probably can't find legitimate copies of (the original, AT&T versions of) Lex and Yacc to install on Ubuntu. I wouldn't necessarily say it is impossible, but I'm not aware of such. Flex and Bison are readily available and are equivalent for most purposes. You may also find var...
Add centered text to the middle of a -like line
...
}
.strike > span:after {
left: 100%;
margin-left: 15px;
}
Example: http://jsfiddle.net/z8Hnz/
Double line
To create a double line, use one of the following options:
1) Fixed space between lines
.strike > span:before,
.strike > span:after {
content: "";
position: abso...
File Explorer in Android Studio
...Then the Android Device Monitor window will pop up. Click on the emulator & File Explorer.
Shared Preference files should be in:
DDMS-> File Explorer ->data -> data -> MY_PACKAGE_NAME -> shared_prefs -> YOUR_PREFERENCE_NAME.xml
...
Making a mocked method return an argument that was passed to it
...ct[] arguments = invocation.getArguments();
if (arguments != null && arguments.length > 0 && arguments[0] != null) {
Room room = (Room) arguments[0];
roomMap.put(room.getName(), room);
}
return null;
}
}).when(roomService).persis...