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How do I use the lines of a file as arguments of a command?
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As already mentioned, you can use the backticks or $(cat filename).
What was not mentioned, and I think is important to note, is that you must remember that the shell will break apart the contents of that file according to whitespace, givin...
ViewPager with previous and next page boundaries
...using a custom container that disabled children clipping to show more than one page at a time.
His published sample code shows the whole thing in action. His container (com.example.pagercontainer.PagerContainer) wraps the ViewPager and calls setClipChildren(false); on itself, so even though the View...
How to get UTF-8 working in Java webapps?
...e encoding used in the request, that it's set to UTF-8.
The other thing done by this filter is to set the default response encoding ie. the encoding in which the returned html/whatever is. The alternative is to set the response encoding etc. in each controller of the application.
This filter has...
How to prepend a string to a column value in MySQL?
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Many string update functions in MySQL seems to be working like this:
If one argument is null, then concatenation or other functions return null too.
So, to update a field with null value, first set it to a non-null value, such as ''
For example:
update table set field='' where field is null;
up...
Size of font in CSS with slash
...ys refers to sizing as, for example, "14 over 22". I put it in by accident one day and was surprised/content when it worked.
– Dylan Lukes
Mar 7 '13 at 20:08
1
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How do I rename a column in a SQLite database table?
...iously, but it was for SQL in general, and the case of SQLite was not mentioned.
15 Answers
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Rails migration for has_and_belongs_to_many join table
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One example is if the relationship is important enough to have a view. It can also be used to speed up accessing the databas by passing around the relationship.id instead of looking it up repeatedly. It also makes troublesh...
function declaration isn't a prototype
...efinition, your program has undefined behavior.
For a function that takes one or more arguments, you can specify the type of each argument in the declaration:
int bar(int x, double y);
Functions with no arguments are a special case. Logically, empty parentheses would have been a good way to spec...
subtract two times in python
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To @IgnacioVazquez-Abrams point, one could use, say,datetime(1,1,1,0,0,0) instead of date.today().
– Akavall
Mar 7 '14 at 18:54
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How do I delete all untracked files from my working directory in Mercurial?
...@YaakovKuperman I guess adding extension is lesser work than this command (one time enabling). I do not enable purge extension because I need it less than once in a fortnight. Also call me silly but, typing this command gives me enough time to think again before doing something as desctructive as 'p...