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How to cherry pick a range of commits and merge into another branch?
...This assumes that B is not a root commit; you'll get an "unknown revision" error otherwise.
Note: as of Git 2.9.x/2.10 (Q3 2016), you can cherry-pick a range of commit directly on an orphan branch (empty head): see "How to make existing branch an orphan in git".
Original answer (January 2010)
A re...
How to join strings in Elixir?
...l values can determine which method you should choose.
This will throw an error
iex(4)> "my name is " <> "adam"
"my name is adam"
iex(1)> "my name is " <> nil
** (ArgumentError) expected binary argument in <> operator but got: nil
(elixir) lib/kernel.ex:1767: Kernel.wr...
记一次MongoDB性能问题 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
记一次MongoDB性能问题最近忙着把一个项目从MySQL迁移到MongoDB，在导入旧数据的过程中，遇到了些许波折，犯了不少错误，但同时也学到了不少知识，遂记录下来。公...最近忙着把一个项目从MySQL迁移到MongoDB，在导入旧数据的过...
Read environment variables in Node.js
...d by node.js?
– PDN
Apr 27 '16 at 1:05
3
process.env gives you access to environment variable set...
How do I find out my python path using python?
...try:
user_paths = os.environ['PYTHONPATH'].split(os.pathsep)
except KeyError:
user_paths = []
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Insert auto increment primary key to existing table
...
For those like myself getting a Multiple primary key defined error try:
ALTER TABLE `myTable` ADD COLUMN `id` INT AUTO_INCREMENT UNIQUE FIRST NOT NULL;
On MySQL v5.5.31 this set the id column as the primary key for me and populated each row with an incrementing value.
...
Getting the last element of a list
...list
[1, 3, 5]
Note that getting a list item by index will raise an IndexError if the expected item doesn't exist. This means that some_list[-1] will raise an exception if some_list is empty, because an empty list can't have a last element.
...
REST API - why use PUT DELETE POST GET?
...ou to use it as you see fit. I'd suggest taking advantage of all of HTTP's error codes and request methods, but you're allowed to do it however you want
– zzzzBov
Jan 1 '11 at 16:15
...
Understanding promises in Node.js
...s was that they were emitters that could emit only two events: success and error.
The cool thing about promises is you can combine them into dependency chains (do Promise C only when Promise A and Promise B complete).
By removing them from the core node.js, it created possibility of building up mo...
PHP code is not being executed, instead code shows on the page
...n php -v from a command line and see if returns version information or any errors.
Make sure that the PHP module is listed and uncommented inside of your Apache's httpd.conf This should be something like LoadModule php5_module "c:/php/php5apache2_2.dll" in the file. Search for LoadModule php, and ma...