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Python: Checking if a 'Dictionary' is empty doesn't seem to work
... behave properly. It just skips it and displays ONLINE without anything except of display the message. Any ideas why ?
8 ...
How to debug Lock wait timeout exceeded on MySQL?
... see the affected table(s)
You get all kinds of additional Locking and Mutex Information.
Here is a sample from one of my clients:
mysql> show engine innodb status\G
*************************** 1. row ***************************
Type: InnoDB
Name:
Status:
=====================================...
How to check if a float value is a whole number
...), and that floating point arithmetic can be imprecise (a float is an approximation using binary fractions, not a precise real number). But adjusting your loop a little this gives:
>>> for n in range(12000, -1, -1):
... if (n ** (1.0/3)).is_integer():
... print n
...
27
8
1
0
...
List vs tuple, when to use each? [duplicate]
...anted to implement a Point class. Would you use a tuple or a list to hold x, y, z coordinates? You would want to change the values (go with list), but at the same time order and position is meaningful and consistent (go with tuple?).
– Arlen
Aug 23 '11 at 15:...
What are all the common ways to read a file in Ruby?
...d
# File is closed automatically at end of block
It is also possible to explicitly close file after as above (pass a block to open closes it for you):
f = File.open("my/file/path", "r")
f.each_line do |line|
puts line
end
f.close
...
Pretty-print C++ STL containers
...uct delimiters_values
{
typedef TChar char_type;
const TChar *prefix;
const TChar *delimiter;
const TChar *postfix;
};
// Defines the delimiter values for a specific container and character type
template<typename T, typename TChar>
struct delimiters
{
static const delimite...
Convert Python dict into a dataframe
..., is since calling the DataFrame constructor with scalar values (where it expects values to be a list/dict/... i.e. have multiple columns):
pd.DataFrame(d)
ValueError: If using all scalar values, you must must pass an index
You could take the items from the dictionary (i.e. the key-value pairs):
...
How to read a file line-by-line into a list?
... remove whitespace characters like `\n` at the end of each line
content = [x.strip() for x in content]
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Sorting a list using Lambda/Linq to objects
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It often happened to me to write complex comparison operators, involving multiple comparison criteria and a failsafe GUID comparison in the end to ensure antisymmetry. Would you use a lambda expression for a complex comparison like that? If not, does this mean tha...
How to simulate a touch event in Android?
How to simulate a touch event with Android while giving the X and Y coordinates manually?
7 Answers
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