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Difference between case object and object
...of serialization
a prettier default implementation of toString, and
the small amount of functionality that they get from automatically inheriting from scala.Product.
Pattern matching, equals and hashCode don't matter much for singletons (unless you do something really degenerate), so you're pre...
pip issue installing almost any library
I have a difficult time using pip to install almost anything. I'm new to coding, so I thought maybe this is something I've been doing wrong and have opted out to easy_install to get most of what I needed done, which has generally worked. However, now I'm trying to download the nltk library, and neit...
str performance in python
...; import dis
>>> dis.dis(lambda: str(100000))
8 0 LOAD_GLOBAL 0 (str)
3 LOAD_CONST 1 (100000)
6 CALL_FUNCTION 1
9 RETURN_VALUE
>>> dis.dis(lambda: '%s' % 100000)
9 0 LOAD...
Where to learn about VS debugger 'magic names'
...moves, we emit debug info for it anyway into the PDB. We stuck the suffix __Deleted$ onto such variables so that the debugger knows that they were in source code but not represented in the binary.
Temporary variable slots allocated by the compiler are given names with the pattern CS$X$Y, where X i...
How to solve “Could not establish trust relationship for the SSL/TLS secure channel with authority”
Really thought I had this issue fixed, but it was only disguised before.
17 Answers
1...
How to access data/data folder in Android device?
...'backup my data'. The resulting 'backup.ab' file on your computer contains all application data in android backup format. Basically it's a compressed tar file. This page explains how you can use OpenSSL's zlib command to uncompress it.
You can use the adb restore backup.db command to restore the b...
Unable to create Android Virtual Device
...
Simply because CPU/ABI says "No system images installed for this target". You need to install system images.
In the Android SDK Manager check that you have installed "ARM EABI v7a System Image" (for each Android version from 4.0 and on you have to install a system image to ...
How to check if bootstrap modal is open, so i can use jquery validate
... @GregPettit mentions, one can use:
($("element").data('bs.modal') || {})._isShown // Bootstrap 4
($("element").data('bs.modal') || {}).isShown // Bootstrap <= 3
as discussed in Twitter Bootstrap Modal - IsShown.
When the modal is not yet opened, .data('bs.modal') returns undefined, he...
NSObject +load and +initialize - What do they do?
...ride +initialize or +load. Documentation makes it clear these methods are called for you by the Objective-C runtime, but that's really all that is clear from the documentation of those methods. :-)
...
How to generate unique ID with node.js
...r issue with a callback as follows:
function generate(count, k) {
var _sym = 'abcdefghijklmnopqrstuvwxyz1234567890',
var str = '';
for(var i = 0; i < count; i++) {
str += _sym[parseInt(Math.random() * (_sym.length))];
}
base.getID(str, function(err, res) {
if...