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When do we need curly braces around shell variables?
... # use the variable
${var} # same as above
${var}bar # expand var, and append "bar" too
$varbar # same as ${varbar}, i.e expand a variable called varbar, if it exists.
This has confused me sometimes - in other languages we refer to the variable in the same way, regardless of whether it's on ...
What is the difference between max-device-width and max-width for mobile web?
... has a browser NOT opened maximized - I suppose it is possible in a hybrid app, but that is a different case). Max-width would certainly be more universal.
– Jason
Jan 15 '14 at 20:34
...
How to send and retrieve parameters using $state.go toParams and $stateParams?
...paramsArr)
And you can access them via $stateParams as array like this:
app.controller('overviewController', function($scope, $stateParams) {
var index = $stateParams[0];
var anotherKey = $stateParams[1];
});
Better solution is using object instead of array in both sides:
$stateProvide...
Swift: #warning equivalent
...
In the future, Apple devs may very well release a //WARNING: landmark, or provide the functionality for another named landmark.
To envoke this functionality with Swift in Xcode today however, you could do the following as outlined by Ben D...
How do I log a Python error with debug information?
...
Quoting
What if your application does logging some other way – not using the logging module?
Now, traceback could be used here.
import traceback
def log_traceback(ex, ex_traceback=None):
if ex_traceback is None:
ex_traceback = e...
How to fix: “HAX is not working and emulator runs in emulation mode”
...
@zhelon apparently the only way to configurate HAXM is to run the installer again.
– ThomasW
Jan 13 '15 at 9:12
2...
Trim trailing spaces in Xcode
...M wiki seemed to be invalid. Instead of placing the .xcplugin in ~/Library/Application Support/Developer/Shared/Xcode/Plug-ins (as per Google's instructions) I had to put it in /Applications/Xcode.app/Contents/PlugIns and restart Xcode.
– Kristofer Sommestad
Ma...
Is there a Java API that can create rich Word documents? [closed]
I have a new app I'll be working on where I have to generate a Word document that contains tables, graphs, a table of contents and text. What's a good API to use for this? How sure are you that it supports graphs, ToCs, and tables? What are some hidden gotcha's in using them?
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Is it secure to store passwords as environment variables (rather than as plain text) in config files
I work on a few apps in rails, django (and a little bit of php), and one of the things that I started doing in some of them is storing database and other passwords as environment variables rather than plain text in certain config files (or in settings.py, for django apps).
...
Swing vs JavaFx for desktop applications [closed]
...program can be run on both Windows, Mac and Linux, and it is a big desktop application with many elements.
Now SWT being somewhat old I would like to switch to either Swing or JavaFX. And I would like to hear your thoughts on three things.
...