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How to run travis-ci locally
...ith jenkins you can download jenkins and run locally. Does travis offer something like this?
9 Answers
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What's the difference between HEAD^ and HEAD~ in Git?
...
Rules of thumb
Use ~ most of the time — to go back a number of generations, usually what you want
Use ^ on merge commits — because they have two or more (immediate) parents
Mnemonics:
Tilde ~ is almost linear in appearance and wants to go backward in a s...
List all svn:externals recursively?
... your working copy:
svn propget svn:externals -R
As discussed in the comments below, this does not list externals in externals.
Note for TortoiseSVN users: there is an option in the TortoiseSVN installer to also install the SVN command line client. This option is not enabled by default.
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How can I call a custom Django manage.py command directly from a test driver?
...oes a backend operation on a database table. How would I invoke the management command directly from code?
5 Answers
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How can I reliably get an object's address when operator& is overloaded?
... func(); is declared, then func is a reference to a function taking no argument and returning no result. This reference to a function can be trivially converted into a pointer to function -- from @Konstantin: According to 13.3.3.2 both T & and T * are indistinguishable for functions. The 1st one...
How do I check if a list is empty?
...'t seem very explicit about what is is checking.
– James McMahon
Nov 22 '11 at 6:14
232
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How do ACID and database transactions work?
...ity
A transaction is a set of related changes which is used to achieve some of the ACID properties. Transactions are tools to achieve the ACID properties.
Atomicity means that you can guarantee that all of a transaction happens, or none of it does; you can do complex operations as one single unit...
PostgreSQL - fetch the row which has the Max value for a column
...a Postgres table (called "lives") that contains records with columns for time_stamp, usr_id, transaction_id, and lives_remaining. I need a query that will give me the most recent lives_remaining total for each usr_id
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Get the IP address of the remote host
...e below shows how this can be done.
private string GetClientIp(HttpRequestMessage request)
{
if (request.Properties.ContainsKey("MS_HttpContext"))
{
return ((HttpContextWrapper)request.Properties["MS_HttpContext"]).Request.UserHostAddress;
}
if (request.Properties.ContainsK...
What is the “volatile” keyword used for?
I read some articles about the volatile keyword but I could not figure out its correct usage. Could you please tell me what it should be used for in C# and in Java?
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