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In MySQL, can I copy one row to insert into the same table?
..., I want to duplicate an existing row in the table) but I want to do this without having to list all the columns after the "select", because this table has too many columns.
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Why does “pip install” inside Python raise a SyntaxError?
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pip is run from the command line, not the Python interpreter. It is a program that installs modules, so you can use them from Python. Once you have installed the module, then you can open the Python shell and do import selenium.
The Python shell is not a command line, it is an interact...
Convert string to variable name in JavaScript
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If it's a global variable then window[variableName]
or in your case window["onlyVideo"] should do the trick.
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n-grams in python, four, five, six grams?
I'm looking for a way to split a text into n-grams.
Normally I would do something like:
15 Answers
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Remove last character from C++ string
... string is called "myString" which gives to the confusion, in the question it is "st". Your code should be: st = st.substr(0, st.size()-1). But it still doesn't look the right way, I think that the proper way is to use the function that is intended for this task, it's called erase() and the code is:...
Which is better option to use for dividing an integer number by 2?
...t you are trying to do.
If you are treating the number as a sequence of bits, use bitshift.
If you are treating it as a numerical value, use division.
Note that they are not exactly equivalent. They can give different results for negative integers. For example:
-5 / 2 = -2
-5 >> 1 = -3
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NoSQL - MongoDB vs CouchDB [closed]
I am a complete noob when it comes to the NoSQL movement. I have heard lots about MongoDB and CouchDB. I know there are differences between the two. Which do you recommend learning as a first step into the NoSQL world?
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Virtual member call in a constructor
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When an object written in C# is constructed, what happens is that the initializers run in order from the most derived class to the base class, and then constructors run in order from the base class to the most derived class (see Eric Lippert'...
How to take all but the last element in a sequence using LINQ?
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I don't know a Linq solution - But you can easily code the algorithm by yourself using generators (yield return).
public static IEnumerable<T> TakeAllButLast<T>(this IEnumerable<T> source) {
var it = source.GetEnumerator();
bool hasRemainingItems = false;
b...
What is the JavaScript convention for no operation?
...nction:
typeof Function.prototype === "function" // returns true
It can be invoked as a function and essentially does nothing as shown here:
setTimeout(function() {
console.log('Start: ', Date.now());
Function.prototype();
console.log('End : ', Date.now());
}, 100...