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'is' versus try cast with null check
...// only one cast
if (myObjRef != null)
{
// myObjRef is already MyType and doesn't need to be cast again
...
}
C# 7.0 supports a more compact syntax using pattern matching:
if (myObj.myProp is MyType myObjRef)
{
...
}
...
How can I process each letter of text using Javascript?
...check in the test clause of the for loop, assuming the compiler knows best and would optimise it accordingly.
– Echelon
Dec 16 '14 at 11:43
3
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How to generate gcc debug symbol outside the build target?
...a .debug extension in a .debug directory. This way I can tar the libraries and executables in one tar file and the .debug directories in another. If I want to add the debug info later on I simply extract the debug tar file and voila I have symbolic debug information.
This is the bash script:
#!/bi...
What are best practices for using SmtpClient, SendAsync and Dispose under .NET 4.0
...en before await was available. This is a traditional callback using event handlers. await should be used if using the newer SendMailAsync.
– TheCodeKing
Jan 10 '15 at 11:05
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Batch file: Find if substring is in string (not in a file)
...
Yes, you can use substitutions and check against the original string:
if not x%str1:bcd=%==x%str1% echo It contains bcd
The %str1:bcd=% bit will replace a bcd in str1 with an empty string, making it different from the original.
If the original didn't c...
Can PostgreSQL index array columns?
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Yes you can index an array, but you have to use the array operators and the GIN-index type.
Example:
CREATE TABLE "Test"("Column1" int[]);
INSERT INTO "Test" VALUES ('{10, 15, 20}');
INSERT INTO "Test" VALUES ('{10, 20, 30}');
CREATE INDEX idx_test on "Test" USING GIN ("Col...
Disable EditText blinking cursor
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You can use either the xml attribute android:cursorVisible="false" or the java function setCursorVisible(false).
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How can I center a div within another div? [duplicate]
...ntered within #main_content . However, it is not. Why isn't this working, and how can I fix it?
27 Answers
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What is the difference between async.waterfall and async.series
...s://github.com/caolan/async provides 2 similar methods, async.waterfall and async.series .
4 Answers
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What is the order of precedence for CSS?
...rying to figure out why one of my css classes seems to override the other (and not the other way around)
8 Answers
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