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How do I add indices to MySQL tables?
...s can be added: when you define a primary key, MySQL will take it as index by default.
Explanation
Primary key as index
Consider you have a tbl_student table and you want student_id as primary key:
ALTER TABLE `tbl_student` ADD PRIMARY KEY (`student_id`)
Above statement adds a primary key, whi...
What is the easiest way to make a C++ program crash?
...hich is the way most applications crash). It is well defined what it does (by default it exits the application and generates a core file). Yes you can set a handler, but if you have one don't you want to test that in the same way!!
– Martin York
Dec 13 '11 at 4...
Gulp command not found after install
...lled in the wrong directory so I had to change the “npm config prefix” by running this code:
npm config set prefix /usr/local
Then I reinstalled gulp globally (with the -g param) and it worked properly.
This article is where I found the solution: http://webbb.be/blog/command-not-found-node-n...
What is digest authentication?
...rname, realm, generate_md5_key(nonce, username, realm, URI, password_given_by_user_to_browser)) (yea, that's very simplified)
The server takes username and realm (plus it knows the URI the client is requesting) and it looks up the password for that username. Then it goes and does its own version of ...
How can I merge two commits into one if I already started rebase?
...nd c together:
(Note: Running git log pipes its output into a pager, less by default on most platforms. To quit the pager and return to your command prompt, press the q key.)
Running git rebase --interactive HEAD~2 gives you an editor with
pick b76d157 b
pick a931ac7 c
# Rebase df23917..a931ac7 ...
What is difference between sjlj vs dwarf vs seh?
... win32, the chain
of handlers are on stack and need to be saved/restored by real
executed code.
GCC GNU about Exception Handling:
GCC supports two methods for exception handling (EH):
DWARF-2 (DW2) EH, which requires the use of DWARF-2 (or DWARF-3) debugging information. DW-2 EH ca...
How to get a group of toggle buttons to act like radio buttons in WPF?
...
This one should be selected answer by far. Gives you all the benefits of a radiobutton without the drawbacks of binding to some controller. I first tried binding to separate invisible radiobutton set, but that had unnecessary overhead and ended up with a bug w...
What's the difference between --general-numeric-sort and --numeric-sort options in gnu sort
...ks, an optional ‘-’ sign, and zero
or more digits possibly separated by
thousands separators, optionally
followed by a decimal-point character
and zero or more digits. An empty
number is treated as ‘0’. The
LC_NUMERIC locale specifies the
decimal-point character and thousands
...
Calculate date from week number
...
I had issues with the solution by @HenkHolterman even with the fix by @RobinAndersson.
Reading up on the ISO 8601 standard resolves the issue nicely. Use the first Thursday as the target and not Monday. The code below will work for Week 53 of 2009 as well...
How to add a custom loglevel to Python's logging facility
...
@Eric S.
Eric S.'s answer is excellent, but I learned by experimentation that this will always cause messages logged at the new debug level to be printed -- regardless of what the log level is set to. So if you make a new level number of 9, if you call setLevel(50), the lower le...