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How to generate random number with the specific length in python
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Does 0 count as a possible first digit? If so, then you need random.randint(0,10**n-1). If not, random.randint(10**(n-1),10**n-1). And if zero is never allowed, then you'll have to explicitly reject numbers with a zero in them, or draw n random.randint(1,9) numbers.
Asid...
Notepad++ Setting for Disabling Auto-open Previous Files
...sive for a long time when I tried to start it again. I killed the task and then removed the problematic <File> element from session.xml before trying again, and that fixed the problem. Thanks!
– Troy Gizzi
Dec 1 '17 at 20:52
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LINQ order by null column where order is ascending and nulls should be last
...re-ordering it each time.
This should order the ones with a value first, "then" the order of the value.
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How to define an enum with string value?
... Enum and add valid common separators which used in CSV or similar files. Then I am going to bind it to a ComboBox as a data source so whenever I add or remove from the Enum definition, I would not need to change anything in the combo box.
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Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
...ct was previously copied (by a subassigning <- or an explicit copy(DT)) then it's the copy that gets modified by reference.
DT <- data.table(a = c(1, 2), b = c(11, 12))
newDT <- DT
.Internal(inspect(DT))
# @0000000003B7E2A0 19 VECSXP g0c7 [OBJ,NAM(2),ATT] (len=2, tl=100)
# @0000000004...
Why must a nonlinear activation function be used in a backpropagation neural network? [closed]
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If the data we wish to model is non-linear then we need to account for that in our model.
– doug
Mar 20 '12 at 10:10
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ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'db'
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use 'quit' to exit the mysql,then you will be in bash
– Nowhy
Jan 12 '12 at 17:02
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How to append something to an array?
... you want to prepend any value to the start of an array (i.e. first index) then you can use Array.prototype.unshift for this purpose.
var arr = [1, 2, 3];
arr.unshift(0);
console.log(arr);
It also supports appending multiple values at once just like push.
Update
Another way with ES6 synta...
What is the difference between a definition and a declaration?
... forget to define something that's been declared and referenced somewhere, then the linker doesn't know what to link references to and complains about a missing symbols. If you define something more than once, then the linker doesn't know which of the definitions to link references to and complains ...
Is there an “exists” function for jQuery?
... @abhirathore2006 If you use an id selector and the element doesn't exist then length is 0 and doesn't throw exceptions.
– Robert
Jun 29 '17 at 20:35
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