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How to commit a change with both “message” and “description” from the command line? [duplicate]
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I do as well ^ But I feel if you're doing commit after commit you don't want to open the VIM every time. Can you add \n into the description doing it this way? E.g git commit -m "Title" -m "Description....\nNew line....\nAnothe...
Margin-Top push outer div down
...a top margin to a h1 inside the header div it pushes the entire header div down. I realize this happens whenever I apply a top margin to the first visible element on a page.
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write a shell script to ssh to a remote machine and execute commands
...h will execute the same set of commands in each machine. (Including some sudo operations). How can this be done using shell scripting?
You can do this with ssh, for example:
#!/bin/bash
USERNAME=someUser
HOSTS="host1 host2 host3"
SCRIPT="pwd; ls"
for HOSTNAME in ${HOSTS} ; do
ssh -l ${USERNAM...
In PHP, how do you change the key of an array element?
... Yeah, great point Robin. Is there a way to keep the same order? Or do you need to create a new array to achieve that?
– Simon East
Jun 28 '12 at 1:19
42
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How do I access properties of a javascript object if I don't know the names?
... Did you just make that last one up and actually got away with it? Well done... =)
– nickl-
Sep 25 '12 at 15:03
Thi...
How do I best silence a warning about unused variables?
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You can put it in "(void)var;" expression (does nothing) so that a compiler sees it is used. This is portable between compilers.
E.g.
void foo(int param1, int param2)
{
(void)param2;
bar(param1);
}
Or,
#define UNUSED(expr) do { (void)(expr); } while (0)
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What happens to C# Dictionary lookup if the key does not exist?
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Assuming you want to get the value if the key does exist, use Dictionary<TKey, TValue>.TryGetValue:
int value;
if (dictionary.TryGetValue(key, out value))
{
// Key was in dictionary; "value" contains corresponding value
}
else
{
// Key wasn't in dictiona...
How to Test a Concern in Rails
...Additionally if you're trying to test model concerns, you won't be able to do things like test the validity of objects or invoke ActiveRecord callbacks unless you set up the database accordingly (because your dummy class won't have a database table backing it). Moreover, you'll want to not only test...
What are some better ways to avoid the do-while(0); hack in C++?
...tersson: "Isolate in function" means refactoring into a new function which does only the tests.
– MSalters
Aug 29 '13 at 10:12
35
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In PHP, can you instantiate an object and call a method on the same line?
What I would like to do is something like this:
9 Answers
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