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What is the difference between “INNER JOIN” and “OUTER JOIN”?
... tables, with the result being a new, temporary table. Joins are performed based on something called a predicate, which specifies the condition to use in order to perform a join. The difference between an inner join and an outer join is that an inner join will return only the rows that actually mat...
Disable time in bootstrap date time picker
...his out due to the update with DateTimePicker. You would enter in a format based off of moment.js documentation. You can use what other answers showed:
$('#datetimepicker').datetimepicker({ format: 'DD/MM/YYYY' });
Or you can use some of the localized formats moment.js provides to do just a date,...
Any reason not to start using the HTML 5 doctype? [closed]
...p representations (serialisations) of the HTML language. The former is XML-based, and the latter is a unique dialect (with special parsing semantics) of SGML.
– Delan Azabani
Aug 12 '11 at 11:39
...
How can I have a newline in a string in sh?
...
What I did based on the other answers was
NEWLINE=$'\n'
my_var="__between eggs and bacon__"
echo "spam${NEWLINE}eggs${my_var}bacon${NEWLINE}knight"
# which outputs:
spam
eggs__between eggs and bacon__bacon
knight
...
How to loop through an array containing objects and access their properties
...sum / myArray.length;
console.log(average); // 200
5. Create a new array based on the original but without modifying it
const myArray = [{x:100}, {x:200}, {x:300}];
const newArray= myArray.map(element => {
return {
...element,
x: element.x * 2
};
});
console.log(myArr...
Is null reference possible?
...
Detection of dereferenced null pointers in typeid works based on syntax, instead of based on semantics. That is, if you do typeid(0, *(ostream*)0) you do have undefined behavior - no bad_typeid is guaranteed to be thrown, even though you pass an lvalue resulting from a null pointe...
How to construct a timedelta object from a simple string
... format(5hr34m56s), you should parse using regular expressions
Here is re-based solution:
import re
from datetime import timedelta
regex = re.compile(r'((?P<hours>\d+?)hr)?((?P<minutes>\d+?)m)?((?P<seconds>\d+?)s)?')
def parse_time(time_str):
parts = regex.match(time_str)...
How to get a JavaScript object's class?
...etClass() in JavaScript. Mostly that's due to JavaScript being a prototype-based language, as opposed to Java being a class-based one.
Depending on what you need getClass() for, there are several options in JavaScript:
typeof
instanceof
obj.constructor
func.prototype, proto.isPrototypeOf
A few...
Why does C# allow {} code blocks without a preceding statement?
...You could say it all comes down to the fact that USA programme language (C based) design won rather than European programme language (Modula-2 based) design.
(Control statements act on a single statement, statements can be groups to create new statements)
...
Exception thrown in catch and finally clause
...
Based on reading your answer and seeing how you likely came up with it, I believe you think an "exception-in-progress" has "precedence". Keep in mind:
When an new exception is thrown in a catch block or finally block that w...