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Do I need to manually close an ifstream?
... the behavior of the code, especially when something throws. If a future maintainer removes them, he doesn't know C++ very well.
– Elliot Cameron
Nov 14 '13 at 22:39
...
JSON left out Infinity and NaN; JSON status in ECMAScript?
...safety/security, all a decent JSON parser would have to do when it goes to convert NaN is to yield the value 0/0 (rather than evaluating the symbol NaN) which will return the "real" NaN regardless of what the symbol NaN is redefined as.
– Jason S
Sep 17 '09 at ...
What is the most efficient way to store tags in a database?
...elong to many items. This implies to me that you'll quite possibly need an intermediary table to overcome the many-to-many obstacle.
Something like:
Table: Items
Columns: Item_ID, Item_Title, Content
Table: Tags
Columns: Tag_ID, Tag_Title
Table: Items_Tags
Columns: Item_ID, Tag_ID
It might be ...
Is optimisation level -O3 dangerous in g++?
...owdown due to all the code of e.g. some inner loop now not fitting anymore into L1I. Generally gcc tries quite hard to not to generate so much code, but since it usually optimizes the generic case, this can happen. Options especially prone to this (like loop unrolling) are normally not included in -...
When increasing the size of VARCHAR column on a large table could there be any problems?
...
Another reason why you should avoid converting the column to varchar(max) is because you cannot create an index on a varchar(max) column.
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How to set up Spark on Windows?
...ava and hit enter.
If you receive a message 'Java' is not recognized as an internal or external command. You need to configure your environment variables, JAVA_HOME and PATH to point to the path of jdk.
Download and install Scala.
Set SCALA_HOME in Control Panel\System and Security\System goto "Ad...
What is the difference between Θ(n) and O(n)?
...ou can read the definition on Wikipedia or consult a classic textbook like Introduction to Algorithms by Cormen et al.
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how to create a file name with the current date & time in python?
...ormat you specify:
import time
timestr = time.strftime("%Y%m%d-%H%M%S")
print timestr
yields:
20120515-155045
so your filename could append or use this string.
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How to make Entity Framework Data Context Readonly
...Set<Customer>().AsNoTracking();
}
}
public override int SaveChanges()
{
// Throw if they try to call this
throw new InvalidOperationException("This context is read-only.");
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
...
How does the Google “Did you mean?” Algorithm work?
...ords as trigrams or bigrams, so that when you are performing a lookup, you convert to n-gram, and lookup via hashtable or trie.
Use heuristics related to potential keyboard mistakes based on character location. So that "hwllo" should be "hello" because 'w' is close to 'e'.
Use a phonetic key (Sounde...