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SqlException from Entity Framework - New transaction is not allowed because there are other threads
...ant to you, just order by primary key as that's likely to have a clustered index.
This version will query the database in batches of 100. Note that SaveChanges() is called for each entity.
If you want to improve your throughput dramatically, you should call SaveChanges() less frequently. Use cod...
How do I Search/Find and Replace in a standard string?
... am used to apply the 'least surprise' principle. For loops are for simple index increment use, most of time. Here, according to me, a while loop is clearer.
– yves Baumes
Aug 23 '12 at 19:16
...
Replacing column values in a pandas DataFrame
...lect rows where the value is 'female'". It means to select rows where the index is 'female', of which there may not be any in your DataFrame.
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Non-Relational Database Design [closed]
...n SQL database: The results of running the view functions are stored in an index, and only the index can be queried. (As "get everything", "get key" or "get key range".)
The closest analogy in the SQL world would be if you could only query the DB using stored procedures - every query you want to su...
Split string into array of character strings
...i relied on split("") and did workarounds cause of this silly empty first index. Now after upgrading to java8, it works as i would have expected it years ago. unfortunately now my workaround breaks my code... ggrrrr.
– Marc
Oct 16 '15 at 0:52
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Why am I not getting a java.util.ConcurrentModificationException in this example?
... we go through, then we will avoid getting a runtime error
//for java.lang.IndexOutOfBoundsException or java.util.ConcurrentModificationException as when we used the iterator
for (int i=size-1; i> -1; i--) {
if (integerList.get(i).equals(remove) ) {
integerList.remove(i);
}
}
...
Spring Boot not serving static content
...ll be resolved relative to these locations. Thus src/main/resources/static/index.html will be served when the request URL is /index.html. The class that is responsible for resolving the path, as of Spring 4.1, is org.springframework.web.servlet.resource.PathResourceResolver.
Suffix pattern matching ...
ReSharper - force curly braces around single line
...g (see details at http://www.jetbrains.com/resharper/webhelp/Code_Cleanup__Index.html), so use the feature wisely.
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Uses for Optional
...e case when it is important that a certain element is located at a certain index, but the element can be present or not. That is clearly communicated by a List<Optional<T>> type. If on the other hand it is only important which objects that are members some some collection then there is n...
What is the difference between HashSet and List?
...eLine(hashSet1[i]);
hashSet1[i] would produce an error:
Cannot apply indexing with [] to an expression of type
'System.Collections.Generic.HashSet'
You can use foreach statement:
foreach (var item in hashSet1)
Console.WriteLine(item);
You can not add duplicated items to HashSet wh...