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How to create a unique index on a NULL column?
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Improvement: ISNULL(X, CONVERT(VARCHAR(10),pk))
– Faiz
Mar 6 '14 at 11:04
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why windows 7 task scheduler task fails with error 2147942667
...Save and close all open dialogs
To get the relevant error message:
1) Convert 2147942667 to hex: 8007010B
2) Take last 4 digits (010B) and convert to decimal: 267
3) Run: net helpmsg 267
4) Result: "The directory name is invalid."
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Which timestamp type should I choose in a PostgreSQL database?
...reference (most likely an offset from UTC, such as -0700).
In application, convert the time to UTC and stored using a TIMESTAMP WITH TIME ZONE column.
Return time requests local to a user's time zone (i.e. convert from UTC to America/Los_Angeles).
Set your database's timezone to UTC.
This option d...
Convert InputStream to BufferedReader
... name to the StreamReader constructor. Since a stream just provides bytes, converting these to text means the encoding must be known. If you don't specify it, the system default is assumed.
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Convert string to variable name in JavaScript
I’ve looked for solutions, but couldn’t find any that work.
11 Answers
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How to convert list of key-value tuples into dictionary?
...context-dependent; do you need O(1) lookup time for keys? Also you cannot "convert lists to dictionaries" arbitrarily; it entirely depends on the semantics. e.g. [(1,2), (1,3)] -> {1:3} would clobber your keys and lose info! A dict is a one-to-* relation with O(1) insert/delete time. List is a li...
Send POST request using NSURLSession
...ts one easy solution would be to create a String instead of Dictionary and convert it to Data. You have the code samples below written on Objective-C and Swift 3.0.
Objective-C
// Create the URLSession on the default configuration
NSURLSessionConfiguration *defaultSessionConfiguration = [NSURLSess...
Convert a list of data frames into one data frame
...hat at one place ends up with a list of data frames which I really want to convert to a single big data frame.
9 Answers
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@selector() in Swift?
...nd Objective-C.
Note: Before Swift 2.2, Selector conformed to StringLiteralConvertible, so you might find old code where bare strings are passed to APIs that take selectors. You'll want to run "Convert to Current Swift Syntax" in Xcode to get those using #selector.
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AsyncTask and error handling on Android
I'm converting my code from using Handler to AsyncTask . The latter is great at what it does - asynchronous updates and handling of results in the main UI thread. What's unclear to me is how to handle exceptions if something goes haywire in AsyncTask#doInBackground .
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