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How to hide a View programmatically?
...wrong boolean, try using these custom extensions:
// Example
view.hide()
fun View?.show() {
if (this == null) return
if (!isVisible) isVisible = true
}
fun View?.hide() {
if (this == null) return
if (!isInvisible) isInvisible = true
}
fun View?.gone() {
if (this == null) retu...
Why does the Scala compiler disallow overloaded methods with default arguments?
...cifying/implementing it. Essentially, the parameter types are part of the function's ID. What does the compiler currently do with foo(String) and foo(Int) (i.e., overloaded methods WITHOUT a default)?
– Mark
Sep 19 '14 at 12:48
...
Good PHP ORM Library?
...roducts'); // Automatically reads the above schema
$product->product_id=123;
$product->description='Sofa bed';
$product->save(); // ORM knows it's a new record
// Retrieve
$product->load('product_id=123');
echo $product->description;
// Update
$product->description='A better sofa...
Fixed point vs Floating point number
...of precision, so a value of 100 means actually means 1.00, 101 means 1.01, 12345 means 123.45, etc.
Floating point numbers are more general purpose because they can represent very small or very large numbers in the same way, but there is a small penalty in having to have extra storage for where the...
致PHP路上的“年轻人” - 杂谈 - 清泛网 - 专注C/C++及内核技术
...着年轻，赶紧造。
作者：Pangee
文章源自：http://pangee.cn/for-young-man@20150916.html
PHP
Any way to modify Jasmine spies based on arguments?
...pi, 'get')
.withArgs('abc').and.returnValue('Jane')
.withArgs('123').and.returnValue(98765);
});
});
For Jasmine versions earlier than 3.0 callFake is the right way to go, but you can simplify it using an object to hold the return values
describe('my fn', function() {
var params ...
How to replace list item in best way
... item.
List<string> listOfStrings = new List<string> {"abc", "123", "ghi"};
listOfStrings[listOfStrings.FindIndex(ind=>ind.Equals("123"))] = "def";
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...
Remove not alphanumeric characters from string
...xample that captures every key I could find on the keyboard:
var string = '123abcABC-_*(!@#$%^&*()_-={}[]:\"<>,.?/~`';
var stripped = string.replace(/[^A-Za-z0-9]/g, '');
console.log(stripped);
Outputs: '123abcABC'.
...
Aggregate / summarize multiple variables per group (e.g. sum, mean)
...
Where is this year() function from?
You could also use the reshape2 package for this task:
require(reshape2)
df_melt <- melt(df1, id = c("date", "year", "month"))
dcast(df_melt, year + month ~ variable, sum)
# year month x1 ...
Convert NaN to 0 in javascript
...ber. This has the added benefit of converting things like numeric strings '123' to a number.
The only unexpected thing may be if someone passes an Array that can successfully be converted to a number:
+['123'] // 123
Here we have an Array that has a single member that is a numeric string. It wi...