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Useless use of cat?
... printf line isn't just another argument to sqlplus, it's an optional user-selectable output filter.
If there's any need to have multiple optional output filters, the option processing could just append | whatever to $filter as often as needed - one extra cat in the pipeline isn't going to hurt any...
How do I list all files of a directory?
...'work.txt', '3ebooks.txt', 'documents']
glob
I found glob easier to select the file of the same type or with something in common. Look at the following example:
import glob
txtfiles = []
for file in glob.glob("*.txt"):
txtfiles.append(file)
glob with list comprehension
import glo...
Check if a class is derived from a generic class
...f (parent == cur || (isParameterLessGeneric && cur.GetInterfaces().Select(i => GetFullTypeDefinition(i)).Contains(GetFullTypeDefinition(parent))))
return true;
else if (!isParameterLessGeneric)
if (GetFullTypeDefinition(parent) == cur &&...
How should I ethically approach user password storage for later plaintext retrieval?
...sing a dictionary of 7776 words (as Diceware uses) which could be randomly selected for a six word passphrase, the passphrase would have an entropy of 77.4 bits. See the Diceware FAQ for more info.
a passphrase with about 77 bits of entropy: "admit prose flare table acute flair"
a password with ab...
Xamarin 2.0 vs Appcelerator Titanium vs PhoneGap [duplicate]
...rojects.
Conclusion
My choice after knowing all these framwework, was to select development tool based on product needs. In general, however if you start to use a tool with which you feel comfortable (even if it requires a higher initial overhead) after you'll use it forever.
I chose Xamarin + M...
【BLE技术内幕】BLE技术揭秘 - 创客硬件开发 - 清泛IT论坛，有思想、有深度
...层做得好不好，直接决定整个BLE芯片的功耗，灵敏度以及selectivity等射频指标。Link Layer，简称：LL，链路层。LL层是整个BLE协议栈的核心，也是BLE协议栈的难点和重点。像Nordic的BLE协议栈能同时支持20个link（连接），就是LL层的功...
multi-step registration process issues in asp.net mvc (split viewmodels, single model)
...stract && typeof(IStepViewModel).IsAssignableFrom(t))
.Select(t => (IStepViewModel)Activator.CreateInstance(t))
.ToList();
}
}
Then we move on to the controller:
public class WizardController : Controller
{
public ActionResult Index()
{
var w...
How can I improve my paw detection?
... I'll give it a whack...
To detect individual paws, you should first only select everything with a pressure greater than some small threshold, very close to no pressure at all. Every pixel/point that is above this should be "marked." Then, every pixel adjacent to all "marked" pixels becomes marke...
Detect if Visual C++ Redistributable for Visual Studio 2012 is installed
..."Next" button.
Next, make a read-only section in the install tree and pre-select or unselect it on the a function which is executed before the Components page is shown.
This will make sure that the installation of each missing runtime component is mandatory, and is skipped if it is already present...
Eclipse Workspaces: What for and why?
...age to tell Eclipse these information. All you have to do explicitly is to select the folder where these files will be placed. And this folder doesn't need to be the same where you put your source code - preferentially it won't be.
Exploring each item above:
a set of (somehow) related projects
E...