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What is the difference between tree depth and height?
...wrong. The depth of the root node should be 0. I will delete my comment in order not to confuse people.
– jdhao
May 10 '18 at 1:13
...
How do I check if an index exists on a table field in MySQL?
...re a.table_schema = 'your_schema'
and a.column_name = 'your_column'
order by a.table_schema, a.table_name;
since the joins are against INNODB_SYS_*, so the match indexes only came from INNODB tables only
share
...
Is there a predefined enumeration for Month in the .NET library?
...s it doesn't prove the negative, but a little reasoning wouldn't be out of order: There is no enum because enums can't be localized. Months.January would have little if no meaning to a Russian programmer. This is further supported by looking at the functions that DO provide month names - they are...
brew install mysql on macOS
...d MySQL 5.7, the process is a bit different than for previous versions.
In order to reset the root password, proceed as follows:
sudo rm -rf /usr/local/var/mysql
mysqld --initialize
A temporary password will be printed to the console and it can only be used for updating the root password:
mysql....
Unittest setUp/tearDown for several tests
... it shows a correct example and these functions HAVE to be classmethods in order to work, which is not mentioned in the accepted answer.
– NuclearPeon
Nov 2 '18 at 0:26
add a ...
Java executors: how to be notified, without blocking, when a task completes?
...y to wait for several threads to complete execution before continuing.
In order to achieve the callback effect you're looking after, that does require a little additional extra work. Namely, handling this by yourself in a separate thread which uses the CountDownLatch and does wait on it, then goes ...
Align two inline-blocks left and right on same line
...feVh/5/. I just added the header:after part and justified the content.
In order to solve the issue of the extra space that is inserted with the after pseudo-element one can do a trick of setting the font-size to 0 for the parent element and resetting it back to say 14px for the child elements. The ...
Decorators with parameters?
...turn repl
return layer
This can be applied to a regular decorator in order to add parameters. So for instance, say we have the decorator which doubles the result of a function:
def double(f):
def aux(*xs, **kws):
return 2 * f(*xs, **kws)
return aux
@double
def function(a):
...
Studies on optimal code width?
...rson shouldn't have to turn their head or rotate their eyes all the way in order to read from one end of a line to the other. So much rapid eye or head rotation would probably cause vertigo if done all day.
– maurice
Feb 5 '18 at 18:46
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Using Regex to generate Strings rather than match them
...-3]([a-c]|[e-g]{1,2})");
// generate the second String in lexicographical order that matches the given Regex.
String secondString = generex.getMatchedString(2);
System.out.println(secondString);// it print '0b'
// Generate all String that matches the given Regex.
List<String> matchedStrs = g...