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Android Bitmap to Base64 String
...yte[] byteArray = byteArrayOutputStream .toByteArray();
to encode base64 from byte array use following method
String encoded = Base64.encodeToString(byteArray, Base64.DEFAULT);
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PHP Sort a multidimensional array by element containing date
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From php7 you can use the Spaceship operator:
usort($array, function($a, $b) {
return new DateTime($a['datetime']) <=> new DateTime($b['datetime']);
});
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Display filename before matching line
...ith the built-in Mac grep (2.5.1-FreeBSD). But to use the alternative grep from Homebrew, another way is to run brew install grep and then just use ggrep. No need to modify PATH.
– wonderlr
Jun 4 '19 at 16:11
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How to delete migration files in Rails 3
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Run below commands from app's home directory:
rake db:migrate:down VERSION="20140311142212" (here version is the timestamp prepended by rails when migration was created. This action will revert DB changes due to this migration)
Run "rails des...
How to update bower.json with installed packages?
...this bower.json). This will be an issue if someone remove angular-animate from bower.json in which case bower will not install angular too since its not listed.
– Aakash
Apr 25 '16 at 6:32
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Calendar date to yyyy-MM-dd format in java
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Anyway to remove timezone completely from from this calender object?
– Sarika.S
Sep 25 '12 at 5:24
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How to check a not-defined variable in JavaScript
...mm... I just noticed the "source" link: this entire post is a direct quote from a mailing list, & should probably be edited to make that more clear, as the original author is not available to clarify.
– Jason S
May 13 '09 at 15:46
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How to loop through a plain JavaScript object with the objects as members?
...for (var key in validation_messages) {
// skip loop if the property is from prototype
if (!validation_messages.hasOwnProperty(key)) continue;
var obj = validation_messages[key];
for (var prop in obj) {
// skip loop if the property is from prototype
if (!obj.hasOwnPro...
How to do associative array/hashing in JavaScript
...two"] = "Second";
associativeArray["three"] = "Third";
If you are coming from an object-oriented language you should check this article.
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How can I convert immutable.Map to mutable.Map in Scala?
...utable.Map varargs factory. Unlike the ++ approach, this uses the CanBuildFrom mechanism, and so has the potential to be more efficient if library code was written to take advantage of this:
val m = collection.immutable.Map(1->"one",2->"Two")
val n = collection.mutable.Map(m.toSeq: _*)
Th...