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Return 0 if field is null in MySQL
In MySQL, is there a way to set the "total" fields to zero if they are NULL?
5 Answers
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Can you set a border opacity in CSS?
...s do not understand the rgba format and will not display any border at all if this is the entire declaration. The solution is to provide two border declarations. The first with a fake opacity, and the second with the actual. If a browser is capable, it will use the second, if not, it will use the fi...
How to check whether a string contains a substring in JavaScript?
...iler like Babel, a shim library like es6-shim, or this polyfill from MDN:
if (!String.prototype.includes) {
String.prototype.includes = function(search, start) {
'use strict';
if (typeof start !== 'number') {
start = 0;
}
if (start + search.length > this.length) {
...
Test a string for a substring [duplicate]
Is there an easy way to test a Python string "xxxxABCDyyyy" to see if "ABCD" is contained within it?
2 Answers
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jQuery - Detecting if a file has been selected in the file input [duplicate]
... add IDs to your input and span so you can select based on those to be specific to the elements you are concerned with and not other file inputs or spans in the DOM.
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CSS rule to apply only if element has BOTH classes [duplicate]
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Also: .abc.xyz is more specific than .abc or .xyz or div so !important is not necessary.
– Jan
Apr 26 '11 at 21:29
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How can I extract all values from a dictionary in Python?
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If you only need the dictionary keys 1, 2, and 3 use: your_dict.keys().
If you only need the dictionary values -0.3246, -0.9185, and -3985 use: your_dict.values().
If you want both keys and values use: your_dict.items() whi...
Correct way to override Equals() and GetHashCode() [duplicate]
...de bool Equals(object obj)
{
var item = obj as RecommendationDTO;
if (item == null)
{
return false;
}
return this.RecommendationId.Equals(item.RecommendationId);
}
public override int GetHashCode()
{
return this.RecommendationId.GetHashCode();
}
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What is the proper way to display the full InnerException?
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@AlexStephens you are right, but only if you have an implicit casting "to string" for some reason, like preceding string: "bla" + exception
– oo_dev
Jun 25 '18 at 11:17
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Why do I get “Pickle - EOFError: Ran out of input” reading an empty file?
...ot empty first:
import os
scores = {} # scores is an empty dict already
if os.path.getsize(target) > 0:
with open(target, "rb") as f:
unpickler = pickle.Unpickler(f)
# if file is not empty scores will be equal
# to the value unpickled
scores = unpickle...