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What is the best way to stop people hacking the PHP-based highscore table of a Flash game
... state, and then re-run the game on the server side using the same moves. Confirm that the stated score is the same as the computed score and only accept the score if they match.
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Get type name without full namespace
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My test obj.GetType().BaseType.Name returns "TypeInfo"which is not the wanted solution as I expect.
– Nasenbaer
Nov 30 '18 at 7:47
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Why Func instead of Predicate?
...s a bool - don't need to understand any terminology - just apply my truth test.
For "predicate" this might have been OK, but I appreciate the attempt to standardise. It also allows a lot of parity with the related methods in that area.
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SET versus SELECT when assigning variables?
...an this and by chance it has been returning single value. During developer testing all is fine. But this is like a ticking bomb and will cause issues when the query returns multiple results. Why? Because it will simply assign the last value to the variable.
Now let's try the same thing with SET:
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Git: Create a branch from unstaged/uncommitted changes on master
... overwrite your local changes. The result of your checkout master is:
M testing
, which means that your working files are not clean. git did change the HEAD, but did not overwrite your local files. That is why your last status still show your local changes, although you are on master.
If you r...
MySQL foreign key constraints, cascade delete
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I got confused by the answer to this question, so I created a test case in MySQL, hope this helps
-- Schema
CREATE TABLE T1 (
`ID` int not null auto_increment,
`Label` varchar(50),
primary key (`ID`)
);
CREATE TABLE T2 (
`ID` int not null auto_increment,
`Label` va...
SELECT DISTINCT on one column
...ery. In the subquery you use GROUP BY instead of DISTINCT:
SELECT * FROM [TestData] WHERE [ID] IN (
SELECT MIN([ID]) FROM [TestData]
WHERE [SKU] LIKE 'FOO-%'
GROUP BY [PRODUCT]
)
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What is the difference between .text, .value, and .value2?
...so I would always recommend using Value. I used the below code to run some tests with various ranges.
If anyone sees anything contrary regarding performance, please post.
Sub Trial_RUN()
For t = 0 To 5
TestValueMethod (True)
TestValueMethod (False)
Next t
End Sub
Sub T...
How do I find duplicates across multiple columns?
...like this will do the trick. Don't know about performance, so do make some tests.
select
id, name, city
from
[stuff] s
where
1 < (select count(*) from [stuff] i where i.city = s.city and i.name = s.name)
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Rename specific column(s) in pandas
... about the same (though YMMV depending on your data set and scenario). The test case below is to rename columns A M N Z to A2 M2 N2 Z2 in a dataframe with columns A to Z containing a million rows.
# Import required modules
import numpy as np
import pandas as pd
import timeit
# Create sample data
d...