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Batch script: how to check for admin rights
...nconsistent state. The dirty bit can be set because:
The volume is online and it has outstanding changes.
Changes were made to the volume and the computer was shut down before the changes were committed to the disk.
Corruption was detected on the volume.
If the dirty bit is set w...
When would you use delegates in C#? [closed]
... delegates in .NET? My answer was very short and one that he had not found online: to delay execution of a method.
Source: LosTechies
Just like LINQ is doing.
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...
Choice between vector::resize() and vector::reserve()
...ts 0
cout <<(v2.capacity()==1000)<< endl; //prints 1
Output (online demo):
1
1
0
1
So resize() may not be desirable, if you don't want the default-created objects. It will be slow as well. Besides, if you push_back() new elements to it, the size() of the vector will further increase...
How do I set up a basic Ruby project?
...by documentation tool.
And besides all of the above tools, their're some online service for ruby project:
CI(Continuous Integration)
travis-ci
circleci
codeship
Code Review
codeclimate
And you can even genearate badges via http://shields.io/ for your open source project.
That's my exper...
Is 23,148,855,308,184,500 a magic number, or sheer chance?
...ens when you make a purchase by card is that the software immediately goes online to ensure you have sufficient funds for the purchase, but only places a hold on the funds for the transaction. At the end of the working day the software then gathers all the transactions placed in the last 24hrs and ...
Is there a good reason I see VARCHAR(255) used so often (as opposed to another length)?
...the maximum to which a VARCHAR's length can be extended through the use of online ALTER TABLE. Consequently, I derived those numbers by creating a table with a varchar(2) charset utf8 column and seeing how far I was able to extend it given ALGORITHM=INPLACE.
– antak
...
When should I use uuid.uuid1() vs. uuid.uuid4() in python?
...is when UUIDs are produced on separate machines, for example when multiple online transactions are process on several machines for scaling purposes.
In such a situation, the risks of having collisions due to poor choices in the way the pseudo-random number generators are initialized, for example, a...
Getting image dimensions without reading the entire file
...rsion, height and width of a GIF image but couldn’t find anything useful online.
Fortunately in case of GIF, all the required information was in the first 10 bytes:
Type: Bytes 0-2
Version: Bytes 3-5
Height: Bytes 6-7
Width: Bytes 8-9
PNG are slightly more complex (width and height are 4-bytes...
What is an efficient way to implement a singleton pattern in Java? [closed]
... System.out.println(Arrays.toString(favoriteSongs));
}
}
Edit: An online portion of "Effective Java" says:
"This approach is functionally equivalent to the public field approach, except that it is more concise, provides the serialization machinery for free, and provides an ironclad gua...
HTML table with 100% width, with vertical scroll inside tbody [duplicate]
...19% is less than (100% / 5 cols) = 20% */
float: left;
}
Here is the Online Demo.
Note: This approach will fail if the content of each column breaks the line, i.e. the content of each cell should be short enough.
In the following, there are two simple example of pure CSS solution which I c...