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Which is faster/best? SELECT * or SELECT column1, colum2, column3, etc
...nt, I have to concur that the question AS ASKED is about if they are the already asking for all columns. Because of this part of the question, the real issues is fragility in the face of schema changes.
– IDisposable
Sep 17 '08 at 20:01
...
Using std Namespace
...
Most C++ users are quite happy reading std::string, std::vector, etc. In fact, seeing a raw vector makes me wonder if this is the std::vector or a different user-defined vector.
I am always against using using namespace std;. It imports all sorts of names...
What is the C# Using block and why should I use it? [duplicate]
...w SomeDisposableType()) {
OperateOnType(u);
}
The second is easier to read and maintain.
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Meaning of numbers in “col-md-4”,“ col-xs-1”, “col-lg-2” in Bootstrap
...edium screens (some desktops)
lg = large screens (remaining desktops)
Read the "Grid
Options"
chapter from the official Bootstrap documentation for more details.
You should usually classify a div using multiple column classes so it behaves differently depending on the screen size (this is...
Creating temporary files in bash
...y I can work in, and in which I can safely name the actual files something readable and useful.
mktemp is not standard, but it does exist on many platforms. The "X"s will generally get converted into some randomness, and more will probably be more random; however, some systems (busybox ash, for one...
Converting an array to a function arguments list [duplicate]
...er will need to use the .apply() method:
app[func].apply( this, args );
Read up on these methods at MDN:
.apply()
spread "..." operator (not to be confused with the related rest "..." parameters operator: it's good to read up on both!)
...
using statement with multiple variables [duplicate]
...e accepted way is just to chain the statements:
using (var sr = new StringReader(content))
using (var xtr = new XmlTextReader(sr))
{
obj = XmlSerializer.Deserialize(xtr) as TModel;
}
Note that the IDE will also support this indentation, i.e. it intentionally won’t try to indent the second u...
Select Pandas rows based on list index
...
For large datasets, it is memory efficient to read only selected rows via the skiprows parameter.
Example
pred = lambda x: x not in [1, 3]
pd.read_csv("data.csv", skiprows=pred, index_col=0, names=...)
This will now return a DataFrame from a file that skips all rows exc...
Why does C++11's lambda require “mutable” keyword for capture-by-value, by default?
...t opened my eyes! :-D I didn't get the true meaning of this answer until I read your comment.
– Jendas
Dec 7 '15 at 22:44
5
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Trying to fix line-endings with git filter-branch, but having no luck
...in the very first commit along with other typical files as .gitignore and README.md
When dealing with an existing repo:
Create / modify .gitattributes accordingly
git commit -a -m "Modified gitattributes"
git rm --cached -r . && git reset --hard && git commit -a -m 'Normalize CR...