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Ruby ampersand colon shortcut [duplicate]
In Ruby, I know that if I do:
2 Answers
2
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Create boolean column in MySQL with false as default value?
...
You have to specify 0 (meaning false) or 1 (meaning true) as the default. Here is an example:
create table mytable (
mybool boolean not null default 0
);
FYI: boolean is an alias for tinyint(1).
Here is the proof:
mysql> create ...
C# delete a folder and all files and folders within that folder
...tory(string directoryName, bool checkDirectiryExist)
{
if (Directory.Exists(directoryName))
Directory.Delete(directoryName, true);
else if (checkDirectiryExist)
throw new SystemException("Directory you want to delete is not exist");
...
Pairwise crossproduct in Python [duplicate]
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You're looking for itertools.product if you're on (at least) Python 2.6.
>>> import itertools
>>> a=[1,2,3]
>>> b=[4,5,6]
>>> itertools.product(a,b)
<itertools.product object at 0x10049b870>
>>> list(itertools....
List Git commits not pushed to the origin yet [duplicate]
...lt;since>..<until>
You can use this with grep to check for a specific, known commit:
git log <since>..<until> | grep <commit-hash>
Or you can also use git-rev-list to search for a specific commit:
git rev-list origin/master | grep <commit-hash>
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How to move up a directory with Terminal in OS X
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cd .. will back the directory up by one. If you want to reach a folder in the parent directory, you can do something like cd ../foldername. You can use the ".." trick as many times as you want to back up through multiple parent directories. For example, cd ../../App...
How do I clear the content of a div using JavaScript? [closed]
...;button onclick="clearBox('cart_item')" />
In JQuery (for reference)
If you prefer JQuery you could do:
$("#cart_item").html("");
share
edited Sep 12 '12 at 5:30
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Locate Git installation folder on Mac OS X
...ge installs into /usr/local/git by default. See also this answer. However, if you install XCode4, it will install a git version in /usr/bin. To ensure you can easily upgrade from the website and use the latest git version, edit either your profile information to place /usr/local/git/bin before /usr/...
IntelliJ: How to auto-highlight variables like in Eclipse
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You'll definitely want to install the "Identifier Highlighter" plugin too, which allows you to easily navigate between highlighted usages.
– Daniel Alexiuc
Sep 20 '11 at 0:15
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HttpServletRequest get JSON POST data [duplicate]
...meters in a servlet the same way:
request.getParameter("cmd");
But only if the POST data is encoded as key-value pairs of content type: "application/x-www-form-urlencoded" like when you use a standard HTML form.
If you use a different encoding schema for your post data, as in your case when you ...