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unix - head AND tail of file
... 10; my @buf = (); while (<>) { print if $. <= $size; push(@buf, $_); if ( @buf > $size ) { shift(@buf); } } print "------\n"; print @buf;'
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How do I rename a column in a SQLite database table?
...mn name is changed both within the table definition itself and also within all indexes, triggers, and views that reference the column. If the column name change would result in a semantic ambiguity in a trigger or view, then the RENAME COLUMN fails with an error and no changes are applied.
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Applying a function to every row of a table using dplyr?
...it reflects the fact that when you're doing row wise operations you're actually working with tuples from a list of vectors (the columns in a dataframe).
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Using Gulp to Concatenate and Uglify files
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All files are generated, however, in the debugger I still see the minified version. What can be the reason? The map file is named correctly and can be accessed by its URL.
– Meglio
Dec 1...
How to change package name of an Android Application
...ould try these instructions from Android's developer site. They're specifically for the GestureBuilder sample but should apply to any application as far as I can tell:
[H]ere's how you could do this in Eclipse:
Right-click on the package name (src/com.android.gesture.builder).
Select R...
What is the difference between and ?
...ue may or may not have any real meaning.
<html lang="en-US"> essentially means "this page is in the US style of English." In a similar way, <html lang="en-GB"> would mean "this page is in the United Kingdom style of English."
If you really wanted to specify an invalid combination, you...
How to prune local tracking branches that do not exist on remote anymore
...getting the first column of that output which will be the branch name. Finally passing all the branch names into the delete branch command.
Since it is using the -d option, it will not delete branches that have not been merged into the branch that you are on when you run this command.
Also remember...
Why should hash functions use a prime number modulus?
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Usually a simple hash function works by taking the "component parts" of the input (characters in the case of a string), and multiplying them by the powers of some constant, and adding them together in some integer type. So for e...
What in the world are Spring beans?
... your application and that are
managed by the Spring IoC* container are called beans. A bean is an
object that is instantiated, assembled, and otherwise managed by a
Spring IoC container. These beans are created with the configuration
metadata that you supply to the container, for example, i...
How to Deep clone in javascript
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It really depends what you would like to clone. Is this a truly JSON object or just any object in JavaScript? If you would like to do any clone, it might get you into some trouble. Which trouble? I will explain it below, but first...