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Difference between String replace() and replaceAll()
What's the difference between java.lang.String 's replace() and replaceAll() methods,
other than later uses regex? For simple substitutions like, replace . with / ,
is there any difference?
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How to format a floating number to fixed width in Python
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So I understand that the 4f represents limiting the decimals to 4 (with trailing zeros), but what does the 10 mean? Does that mean this formatting won't work with integers greater than 9999999999 (ten 9's)? Just curious.
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How to get all Errors from ASP.Net MVC modelState?
... Very helpful. Note in some scenarios, such as binding failures and bad requests, there will be ModelState entries with empty string for Value.ErrorMessage and instead a Value.Exception.Message
– AaronLS
Sep 16 '14 at 1:12
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Why is using “for…in” for array iteration a bad idea?
...5;
for (var x in a) {
// Shows only the explicitly set index of "5", and ignores 0-4
console.log(x);
}
/* Will display:
5
*/
Also consider that JavaScript libraries might do things like this, which will affect any array you create:
// Somewhere deep in your JavaScript...
Is Ruby pass by reference or by value?
...has a reference to. (Even this isn't bulletproof, though — both of the standard cloning methods do a shallow copy, so the instance variables of the clone still point to the same objects that the originals did. If the objects referenced by the ivars mutate, that will still show up in the copy, sinc...
Syntax error on print with Python 3 [duplicate]
... to write it as
print("Hello World")
But if you write this in a program and someone using Python 2.x tries to run it, they will get an error. To avoid this, it is a good practice to import print function:
from __future__ import print_function
Now your code works on both 2.x & 3.x.
Check o...
What .NET collection provides the fastest search
...ection" depends on your specific data size, ordered-ness, cost-of-hashing, and search frequency.
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Join a list of items with different types as string in Python
...ou want a list of strings. You could instead keep it as a list of integers and only convert the integers to strings when you need to display them. For example, if you have a list of integers then you can convert them one by one in a for-loop and join them with ,:
print(','.join(str(x) for x in list...
How to Sort a List by a property in the object
...d Order which has properties such as OrderId , OrderDate , Quantity , and Total . I have a list of this Order class:
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Ignore Typescript Errors “property does not exist on value of type”
... You could also create an interface that extends HTMLElement and has the additional getBBox property. That way you still get code completion on the other properties.
– thetallweeks
Sep 24 '14 at 19:13
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