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A non well formed numeric value encountered
... (start and finish) to a PHP script that will add those to a DB. I am having problems validating this. I keep getting the following errors
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How to change the Text color of Menu item in Android?
Can I change the background color of a Menu item in Android?
27 Answers
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Java rounding up to an int using Math.ceil
....90625 , I need to round up, I've looked around and this seems to be the right method.
15 Answers
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Foreign Key to multiple tables
I've got 3 relevant tables in my database.
5 Answers
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How do I concatenate two lists in Python?
...ne = [1,2,3]
listtwo = [4,5,6]
joinedlist = listone + listtwo
Output:
>>> joinedlist
[1,2,3,4,5,6]
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Replace all 0 values to NA
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Replacing all zeroes to NA:
df[df == 0] <- NA
Explanation
1. It is not NULL what you should want to replace zeroes with. As it says in ?'NULL',
NULL represents the null object in R
which is unique and, I guess, can be ...
What does the thread_local mean in C++11?
...m confused with the description of thread_local in C++11. My understanding is, each thread has unique copy of local variables in a function. The global/static variables can be accessed by all the threads (possibly synchronized access using locks). And the thread_local variables are visible to al...
What's the difference between %s and %d in Python string formatting?
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They are used for formatting strings. %s acts a placeholder for a string while %d acts as a placeholder for a number. Their associated values are passed in via a tuple using the % operator.
name = 'marcog'
number = 42
print '%s %d' % (name, number)
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ssh: The authenticity of host 'hostname' can't be established
When i ssh to a machine, sometime i get this error warning and it prompts to say "yes" or "no". This cause some trouble when running from scripts that automatically ssh to other machines.
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Hiding user input on terminal in Linux script
I have bash script like the following:
9 Answers
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