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How to parse a string into a nullable int
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@Chris, the compiler doesn't like your inline if statement (These types are not compatible: 'int' : 'null'). I had to amend it to: return Int32.TryParse(s, out i)? (int?)i : null;
– death_au
Jan 25 ...
“Use of undeclared type” in Swift, even though type is internal, and exists in same module
... test target did not have some swift files that my app build target had in compile sources. It was very confusing because the 'undeclared type' was being used in so many other places with no problem, and the error seemed vague. So solution there was of course to add the file containing the 'undec...
Is it possible to data-bind visible to the negation (“!”) of a boolean ViewModel property?
...n my ViewModel to toggle which icon to display without creating a separate computed property of the inverse. Is this possible?
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“NODE_ENV” is not recognized as an internal or external command, operable command or batch file
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It sounds like your error comes from an attempt to run something like this (which works in Linux)
NODE_ENV=development node foo.js
the equivalent in Windows would be
SET NODE_ENV=development
node foo.js
running in the same command shell. You me...
Is there any sed like utility for cmd.exe? [closed]
I want to programmatically edit file content using windows command line ( cmd.exe ). In *nix there is sed for this tasks. Is there any useful native equivalent in windows?
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Can I convert long to int?
... want (discarding MSBs and taking LSBs) in unchecked context (which is the compiler default). It'll throw OverflowException in checked context if the value doesn't fit in an int:
int myIntValue = unchecked((int)myLongValue);
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PHP - concatenate or directly insert variables in string
...cations, those won't matter 1.
As a sidenote, so my answer is a bit more complete: the day you'll want to do something like this:
echo "Welcome $names!";
PHP will interpret your code as if you were trying to use the $names variable -- which doesn't exist.
- note that it will only work if you us...
MYSQL import data from csv using LOAD DATA INFILE
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You can use LOAD DATA INFILE command to import csv file into table.
Check this link MySQL - LOAD DATA INFILE.
LOAD DATA LOCAL INFILE 'abc.csv' INTO TABLE abc
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\r\n'
IGNORE 1 LINES
(col1, c...
Overriding fields or properties in subclasses
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What underlies this JavaScript idiom: var self = this?
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See this article on alistapart.com. (Ed: The article has been updated since originally linked)
self is being used to maintain a reference to the original this even as the context is changing. It's a technique often used in event handlers (especially in cl...