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Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
...trying to be set on a copy of a slice from a DataFrame. Try using .loc[row_indexer,col_indexer] = value instead." Should I be worried about that? pandas v.0.15
– taras
Oct 11 '14 at 21:31
...
Why is my git repository so big?
...0/266720
git-eradicate (for video/parasite.avi):
git filter-branch -f --index-filter \
'git rm --force --cached --ignore-unmatch video/parasite-intro.avi' \
-- --all
rm -Rf .git/refs/original && \
git reflog expire --expire=now --all && \
git gc --aggressive &...
Is it possible to roll back CREATE TABLE and ALTER TABLE statements in major SQL databases?
... new foo table. (Edit: this was fixed in or before PostgreSQL 9.3)
CREATE INDEX ... CONCURRENTLY is exceptional, it uses three transactions to add an index to a table while allowing concurrent updates, so it cannot itself be performed in a transaction.
Also the database maintenance command VACUUM ...
How do you use NSAttributedString?
... for enum access (needed because enum can't use '-'):
func helveticaFont (index:Int) -> (String) {
let fontArray = [
"HelveticaNeue-Bold",
"HelveticaNeue-CondensedBlack",
"HelveticaNeue-Medium",
"HelveticaNeue",
"HelveticaNeue-Light",
"HelveticaNeue-CondensedBold",
...
Android: HTTP communication should use “Accept-Encoding: gzip”
...ence/java/net/HttpURLConnection.html I was able to return gzip pages from php by using ob_start("ob_gzhandler");
– metric152
Aug 13 '12 at 18:35
...
How to do a PUT request with curl?
...s.
For the request with other formats or for different clients like java, PHP, you can check out POSTMAN/comment below.
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How to alias a table in Laravel Eloquent queries (or using Query Builder)?
... ->get();
Let's see it in action with an awesome tinker tool
$ php artisan tinker
[1] > Schema::create('really_long_table_name', function($table) {$table->increments('id');});
// NULL
[2] > DB::table('really_long_table_name')->insert(['id' => null]);
// true
[3] > DB::t...
How can I use Spring Security without sessions?
...sHandler">
<property name="defaultTargetUrl" value="/index.html"/>
<property name="passwordExpiredUrl" value="/changePassword.jsp"/>
<property name="alwaysUseDefaultTargetUrl" value="true"/>
</bean>
</p...
How to encode the filename parameter of Content-Disposition header in HTTP?
...u want, you don't need any extra headers!
This trick works:
/real_script.php/fake_filename.doc
And if your server supports URL rewriting (e.g. mod_rewrite in Apache) then you can fully hide the script part.
Characters in URLs should be in UTF-8, urlencoded byte-by-byte:
/mot%C3%B6rhead # mot...
Styling text input caret
...nge using Javascript and CSS http://www.dynamicdrive.com/forums/showthread.php?t=17450 It seems a bit hacky to me, but probably the only way to accomplish the task. The main point of the article is:
We will have a plain textarea somewhere in the screen out of the view
of the viewer and when th...