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Checking if a string can be converted to float in Python
... a list of strings and converts them to integers or floating point numbers if possible. Doing this for integers is pretty easy
...
How to print binary tree diagram?
...
I've created simple binary tree printer. You can use and modify it as you want, but it's not optimized anyway. I think that a lot of things can be improved here ;)
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class BTreePrinterTest {
p...
IE8 support for CSS Media Query
...
Internet Explorer versions before IE9 do not support media queries.
If you are looking for a way of degrading the design for IE8 users, you may find IE's conditional commenting helpful. Using this, you can specify an IE 8/7/6 specific style sheet which over writes the previous rules.
For exa...
I need to pop up and trash away a “middle” commit in my master branch. How can I do it?
...it will look like that second commit never existed. This will be a problem if you've pushed the master branch out to any other repos. If you try to push after a rebase in this case, git will give you a reject non fast-forward merges error.
Revert is the correct solution when the branch has been sha...
typedef fixed length array
... type is an array type, but users of it won't see that it's an array type. If used as a function argument, it will be passed by reference, not by value, and the sizeof for it will then be wrong.
A better solution would be
typedef struct type24 { char x[3]; } type24;
You probably also want to be ...
Extract filename and extension in Bash
...ocus on the last '/' of the path instead of the '.' which should work even if you have unpredictable file extensions:
filename="${fullfile##*/}"
You may want to check the documentation :
On the web at section "3.5.3 Shell Parameter Expansion"
In the bash manpage at section called "Parameter Exp...
App Inventor 2 传感器应用教程 - 位置/方向/加速度传感器 · App Inventor 2 中文网
...1, 偏航)
}
function 偏航转方向(角度) {
var 方向 = "西北"
if 角度 >= 337.5 or 角度 < 22.5 {
var 方向 = "北"
} else if 角度 < 67.5 {
var 方向 = "东北"
} else if 角度 < 112.5 {
var 方向 = "东"
} else if 角度 < 157.5 {
var 方向 = "东南"
}...
Focus Next Element In Tab Index
...r curIndex = currentElement.tabIndex; //get current elements tab index
if(curIndex == lastTabIndex) { //if we are on the last tabindex, go back to the beginning
curIndex = 0;
}
var tabbables = document.querySelectorAll(".tabable"); //get all tabable elements
for(var i=0; i<...
Fastest way to reset every value of std::vector to 0
...guessing is about as fast. I'd use your method.
– Omnifarious
Jan 13 '12 at 10:04
But, jumping to memset is a single i...
SyntaxError: Non-ASCII character '\xa3' in file when function returns '£'
... also define encodings on a string by string basis in your code. However, if you are trying to put the pound sign literal in to your code, you'll need an encoding that supports it for the entire file.
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