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invalid byte sequence for encoding “UTF8”
... -f original_charset -t utf-8 originalfile > newfile
You can change psql (the client) encoding following the instructions on Character Set Support. On that page, search for the phrase "To enable automatic character set conversion".
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Strange SQLAlchemy error message: TypeError: 'dict' object does not support indexing
I am using hand crafted SQL to fetch data from a PG database, using SqlAlchemy. I am trying a query which contains the SQL like operator '%' and that seems to throw SqlAlcjhemy through a loop:
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How to find first element of array matching a boolean condition in JavaScript?
...eturn whether the condition was met once, not by which element (or at what index) it was met. So we have to amend it a little:
function find(arr, test, ctx) {
var result = null;
arr.some(function(el, i) {
return test.call(ctx, el, i, arr) ? ((result = el), true) : false;
});
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jQuery map vs. each
...back arguments in the map function so be careful.
map(arr, function(elem, index) {});
// versus
each(arr, function(index, elem) {});
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Why use ICollection and not IEnumerable or List on many-many/one-many relationships?
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Lists are defined more by their indexers than by the ability to sort them (having an integer indexer makes it easy to sort something, but it's not a requirement).
– phoog
Apr 11 '12 at 20:22
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Remove Primary Key in MySQL
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Without an index, maintaining an autoincrement column becomes too expensive, that's why MySQL requires an autoincrement column to be a leftmost part of an index.
You should remove the autoincrement property before dropping the key:
AL...
Can we write our own iterator in Java?
...Type> it = new Iterator<Type>() {
private int currentIndex = 0;
@Override
public boolean hasNext() {
return currentIndex < currentSize && arrayList[currentIndex] != null;
}
@Override
public...
What is the difference between Set and List?
...ach element is inserted. The
user can access elements by their
integer index (position in the list),
and search for elements in the list.
Set<E>:
A collection that contains no
duplicate elements. More formally,
sets contain no pair of elements e1
and e2 such that e1.equals(e2...
How to handle click event in Button Column in Datagridview?
...here and even provided by the documentation at MSDN to hardcode the column index or column name in order to determine if a button was clicked. The click event registers for the entire grid, so somehow you need to determine that a button was clicked, but you should not do so by assuming that your bu...
rmagick gem install “Can't find Magick-config”
...opard 10.6 using RVM, Ruby 1.9.2-head and Rails 3.05. Responses to similar questions recommended installing ImageMagick, which I successfully did. Other suggested installing the "libmagick9-dev library", however, I can not figure out how to do this.
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