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sqlite database default time value 'now'
Is it possible in a sqlite database to craete a table that has a timestamp column that default to DATETIME('now') ?
7 Ans...
Cache Invalidation — Is there a General Solution?
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What you are talking about is lifetime dependency chaining, that one thing is dependent on another which can be modified outside of it's control.
If you have an idempotent function from a, b to c where, if a and b are the same then c is the same but the cost o...
What is the !! (not not) operator in JavaScript?
I saw some code that seems to use an operator I don't recognize, in the form of two exclamation points, like so: !! . Can someone please tell me what this operator does?
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C#: Looping through lines of multiline string
...ay to loop through each line of a multiline string without using much more memory (for example without splitting it into an array)?
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How to split a long regular expression into multiple lines in JavaScript?
...ral to a string you need to escape all backslashes as backslashes are consumed when evaluating a string literal. (See Kayo's comment for more detail.)
RegExp accepts modifiers as a second parameter
/regex/g => new RegExp('regex', 'g')
[Addition ES20xx (tagged template)]
In ES20xx you can use ...
Programmatically creating Markdown tables in R with KnitR
... starting to learn about KnitR and the use of Markdown in generating R documents and reports. This looks to be perfect for a lot of the day to day reporting that I have to do with my job. However, one thing that I'm not seeing is an easy way to print data frames and tables using Markdown formatting ...
What is http multipart request?
I have been writing iPhone applications for some time now, sending data to server, receiving data (via HTTP protocol), without thinking too much about it. Mostly I am theoretically familiar with process, but the part I am not so familiar is HTTP multipart request. I know its basic structure, but the...
When is SQLiteOpenHelper onCreate() / onUpgrade() run?
...eOpenHelper versions the database files. The version number is the int argument passed to the constructor. In the database file, the version number is stored in PRAGMA user_version.
onCreate() is only run when the database file did not exist and was just created. If onCreate() returns successfully ...
How do I close a connection early?
...ntent-Length: $size");
ob_end_flush();
flush();
sleep(13);
error_log("do something in the background");
?>
Which works fine until you substitute phpinfo() for echo('text I want user to see'); in which case the headers are never sent!
The solution is to explicitly turn off output buffer...
Force Screen On
...event the device from sleeping? If so, the commonness of WAKE_LOCK strikes me as a shocking mistake!
– Michael Cramer
Jan 25 '10 at 18:52
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