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Ruby: kind_of? vs. instance_of? vs. is_a?
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kind_of? and is_a? are synonymous.
instance_of? is different from the other two in that it only returns true if the object is an instance of that exact class, not a subclass.
Example:
"hello".is_a? Object and "hello".kind_of? Object return true because "hello" is a String and String...
Calling Java from Python
What is the best way to call java from python?
(jython and RPC are not an option for me).
9 Answers
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How to prune local tracking branches that do not exist on remote anymore
...merged master | egrep -v '^\s*\*?\s*master$' | xargs git branch -d. Output from git v2.10.1 will display "* master" when master is checked out. I get rid of master both with or without an asterisk.
– Esteban
May 16 '17 at 19:12
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What really happens in a try { return x; } finally { x = null; } statement?
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No - at the IL level you can't return from inside an exception-handled block. It essentially stores it in a variable and returns afterwards
i.e. similar to:
int tmp;
try {
tmp = ...
} finally {
...
}
return tmp;
for example (using reflector):
static int ...
How to remove new line characters from a string?
... I had a similar problem where I needed also to remove newlines from my string. I tried to do it with string.Replace, didn't work. When I used Regex.Replace with the exact same regular expression string as the parameter, it worked. Thanks.
– instanceof
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How do I check if a type provides a parameterless constructor?
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Short and Sweet. +1 from the future.
– TaterJuice
Jan 9 '16 at 0:08
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Random alpha-numeric string in JavaScript? [duplicate]
...ch. I tried using it, and it seems to have some problems. As you can see from THIS screenshot, it sometimes generates strings that aren't the specified length. I put your randomString(..) function in a for(var i=0;i<50;i++){} loop that generated 50 random strings, and the last one is three cha...
How to draw polygons on an HTML5 canvas?
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from http://www.scienceprimer.com/drawing-regular-polygons-javascript-canvas:
The following code will draw a hexagon. Change the number of sides to create different regular polygons.
var ctx = document.getElementById('h...
Detect 7 inch and 10 inch tablet programmatically
...ayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
From this, we can get the information required to size the display:
int widthPixels = metrics.widthPixels;
int heightPixels = metrics.heightPixels;
This will return the absolute value of the width and the height in pixels,...
How to hide the “back” button in UINavigationController?
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Also learn from my mistake: you have to call setHidesBackButton: BEFORE you push the navigationItem into the navigationController.
– codingFriend1
Nov 16 '12 at 16:26
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