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How do you simulate Mouse Click in C#?
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Mouse.Click();
Microsoft.VisualStudio.TestTools.UITesting
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How do I perform an IF…THEN in an SQL SELECT?
...lumnname>
FROM <table>
The extended case:
SELECT CASE WHEN <test> THEN <returnvalue>
WHEN <othertest> THEN <returnthis>
ELSE <returndefaultcase>
END AS <newcolumnname>
FROM <table>
You can ev...
What is the most effective way for float and double comparison?
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I found that the Google C++ Testing Framework contains a nice cross-platform template-based implementation of AlmostEqual2sComplement which works on both doubles and floats. Given that it is released under the BSD license, using it in your own code shou...
What is a lambda (function)?
...an primitive type.
Predicate<Integer> pred = x -> x % 2 == 0; // Tests if the parameter is even.
boolean result = pred.test(4); // true
Lua
adder = function(x)
return function(y)
return x + y
end
end
add5 = adder(5)
add5(1) == 6 -- true
Kotlin
val pred = { x: I...
log all sql queries
...
Oh, and one more thing to in django test runner ignores settings and overrides DEBUG to False, so in test you must @override_settings(DEBUG=True)
– Janusz Skonieczny
Oct 19 '17 at 15:14
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How do I do an OR filter in a Django query?
...o.db.models import Q
query = Q(first_name='mark')
query.add(Q(email='mark@test.com'), Q.OR)
query.add(Q(last_name='doe'), Q.AND)
queryset = User.objects.filter(query)
This ends up with a query like :
(first_name = 'mark' or email = 'mark@test.com') and last_name = 'doe'
This way there is no n...
How can I perform a str_replace in JavaScript, replacing text in JavaScript?
...unlikely to beat indexing into a string in the common case.
For a simple test run on the JS perf page, I've documented some of the results:
<script>
// Setup
var startString = "xxxxxxxxxabcxxxxxxabcxx";
var endStringRegEx = undefined;
var endStringString = undefined;
var en...
Avoiding if statement inside a for loop?
...rry about in terms of performance
In this case I advocate for keeping the test inside the loop for clarity.
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C# 'is' operator performance
... that requires fast performance. Within one of its inner loops, I need to test the type of an object to see whether it inherits from a certain interface.
...
How do I prevent commands from showing up in Bash history?
...tory (as well as duplicates).
For example:
$ HISTCONTROL=ignoreboth
$ echo test1
$ echo test2
$ history | tail -n2
1015 echo test1
1016 history | tail -n2
Here is what man bash says:
HISTCONTROL
A colon-separated list of values controlling how commands are saved on the history list. If the l...