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Grouping functions (tapply, by, aggregate) and the *apply family
...ing useRs may have difficulty deciding which one is appropriate for their situation or even remembering them all. They may have a general sense that "I should be using an *apply function here", but it can be tough to keep them all straight at first.
Despite the fact (noted in other answers) that mu...
How does a Linux/Unix Bash script know its own PID?
I have a script in Bash called Script.sh , and it needs to know its own PID (i.e. I need to get PID inside the Script.sh )
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How to capitalize the first letter of word in a string using Java?
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If you only want to capitalize the first letter of a string named input and leave the rest alone:
String output = input.substring(0, 1).toUpperCase() + input.substring(1);
Now output will have what you want. Check that your input is at least one...
Echo newline in Bash prints literal \n
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edited May 20 '15 at 14:46
answered Dec 11 '11 at 21:04
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How to make type=“number” to positive numbers only
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edited Aug 27 '19 at 7:44
Álvaro González
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How many Activities vs Fragments?
...als are very simplified. They just introduce Fragments but I do not agree with the pattern as suggested.
I also agree that it is not a good idea to duplicate your app's logic across many Activities (see DRY Principle on wikipedia).
I prefer the pattern used by the ActionBarSherlock Fragments Dem...
Difference between using bean id and name in Spring configuration file
...names; these
terms refer to the same thing). These
ids must be unique within the
container the bean is hosted in. A
bean will almost always have only one
id, but if a bean has more than one
id, the extra ones can essentially be
considered aliases.
When using XML-based configuratio...
Searching subversion history (full text)
Is there a way to perform a full text search of a subversion repository, including all the history?
16 Answers
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Difference between single quotes and double quotes in Javascript [duplicate]
...want double quotes to appear inside the string (e.g. for html attributes) without having to escape them, or vice versa. Other than that, there is no difference.
However, note that JSON (JavaScript Object Notation) only supports double quoted strings.
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How to pass arguments and redirect stdin from a file to program run in gdb?
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Pass the arguments to the run command from within gdb.
$ gdb ./a.out
(gdb) r < t
Starting program: /dir/a.out < t
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