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print call stack in C or C++
...urns an array of void * (in fact each of these point to the return address from the corresponding stack frame). To translate these to something of use, there's backtrace_symbols(3).
Pay attention to the notes section in backtrace(3):
The symbol names may be unavailable
without the use of spec...
Database sharding vs partitioning
...ted out partitioned on very few servers, using Postgres to divide the data from the get-go. I believe it was several thousand logical shards on those few physical shards. Read their awesome writeup from 2012 here: Instagram Engineering - Sharding & IDs
See here as well: http://www.quora.com/Wha...
C#: Looping through lines of multiline string
...
from MSDN for StringReader
string textReaderText = "TextReader is the abstract base " +
"class of StreamReader and StringReader, which read " +
"characters from streams and strings, respectively.\n\n" +
...
How to change a git submodule to point to a subfolder?
...ory as a submodule, you could always create a new repository that's cloned from boto and then set up a cron job to:
git fetch that repository into a directory
Use git filter-branch to update a branch where the subdirectory is at the top level.
Add that branch of the repository as the submodule....
Never seen before C++ for loop
...g a comma has the value of the last subexpression on the right. This comes from C and can be used in any expression, not only in a for loop.
– Giorgio
Aug 1 '12 at 8:04
7
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How can I clear event subscriptions in C#?
...
From within the class, you can set the (hidden) variable to null. A null reference is the canonical way of representing an empty invocation list, effectively.
From outside the class, you can't do this - events basically expo...
How to fix the “java.security.cert.CertificateException: No subject alternative names present” error
...
This is an old question, yet I had the same problem when moving from JDK 1.8.0_144 to jdk 1.8.0_191
We found a hint in the changelog:
Changelog
we added the following additional system property, which helped in our case to solve this issue:
-Dcom.sun.jndi.ldap.object.disableEndpointId...
Why should I implement ICloneable in c#?
Can you explain to me why I should inherit from ICloneable and implement the Clone() method?
4 Answers
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Reading large text files with streams in C#
... a case where streaming a large, generated CSV file to the Response stream from an ASP.Net MVC action was very slow. Adding a BufferedStream improved performance by 100x in this instance. For more see Unbuffered Output Very Slow
...
What is event bubbling and capturing?
...ion:
quirksmode.org has a nice description of this. In a nutshell (copied from quirksmode):
Event capturing
When you use event capturing
| |
---------------| |-----------------
| element1 | | |
| -----------| |----------- |
| |element2 \ / ...