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Returning IEnumerable vs. IQueryable
...n expression tree is like the reflection system but for code. The compiler converts your code into a data structure that describes what your code does in a format that's easily digestible.
Why bother with this expression tree thing? I just want Where() to filter my data.
The main reason is that bo...
Calculate number of hours between 2 dates in PHP
...te difficult to take leap seconds into account).
The most flexible way to convert a datetime string with optional timezone information into a Unix timestamp is to construct a DateTime object (optionally with a DateTimeZone as a second argument in the constructor), and then call its getTimestamp met...
How to convert Linux cron jobs to “the Amazon way”?
For better or worse, we have migrated our whole LAMP web application from dedicated machines to the cloud (Amazon EC2 machines). It's going great so far but the way we do crons is sub-optimal. I have a Amazon-specific question about how to best manage cron jobs in the cloud using "the Amazon way...
Enforcing the type of the indexed members of a Typescript object?
...ually confuse TypeScript and break type safety. For example, if you try to convert a { number: string } to a { string: number } by swapping keys with values, you actually end up with a { string: string } yet TypeScript doesn't throw any warnings/errors
– tep
Ma...
Replacing Pandas or Numpy Nan with a None to use with MysqlDB
... out an error saying nan is not in the field list. I need to find a way to convert the 'nan' into a NoneType.
7 Answers
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Why does the is operator return false when given null?
...'t need other types of conversion here) conversion exists; (2) null can be converted to any reference type. Therefore (null is T), where T is a reference type should return true. But no, here we have that explicit exception, which is what seems confusing to me.
– Gebb
...
Downloading a Google font and setting up an offline site that uses it
...u downloaded (.ttf should be extracted)
Go to "http://ttf2woff.com/" and convert any .ttf extracted from zip to .woff
Edit desiredfontname.css and replace any url within it [between 'url(' and ')'] with the corresponding converted .woff file you got on ttf2woff.com; path you write should be acco...
How can I use NSError in my iPhone App?
...rname or password.";
"1004" = "Failed to parse FNID."
2) Add macros to convert integer codes to localized error messages. I've used 2 macros in my Constants+Macros.h file. I always include this file in the prefix header (MyApp-Prefix.pch) for convenience.
Constants+Macros.h
// error handling ....
How to install MySQLdb (Python data access library to MySQL) on Mac OS X?
...-10.5-i386.egg/_mysql.pyc, but XXXX/MySQL-python-1.2.3c1 is being added to sys.path
This is pretty easy to Google, but to save you the trouble you will end up here (or maybe not... not a particularly future-proof URL) and figure out that you need to cd .. out of build directory and the error should...
Deserialize json object into dynamic object using Json.net
...est]
public void DynamicDeserialization()
{
dynamic jsonResponse = JsonConvert.DeserializeObject("{\"message\":\"Hi\"}");
jsonResponse.Works = true;
Console.WriteLine(jsonResponse.message); // Hi
Console.WriteLine(jsonResponse.Works); // True
Console.WriteLine(JsonConvert.Seriali...