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What exactly is Heroku?
I just started learning Ruby on rails and I was wondering what Heroku really is? I know that its a cloud that helps us to avoid using servers? When do we actually use it?
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Why can't non-default arguments follow default arguments?
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All required parameters must be placed before any default arguments. Simply because they are mandatory, whereas default arguments are not. Syntactically, it would be impossible for the interpreter to decide which values match...
Log4Net, how to add a custom field to my logging
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@DumbDev, usually you will use the Thread context. The GlobalContext is useful to set properties that do not change very often.
– Marcelo De Zen
Mar 10 '15 at 19:06
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Conditionally ignoring tests in JUnit 4
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@notnoop, that isn't my observation at all. They are ignored. The IDEA test runner reports them that way, and a look at the JUnit source code shows that it reports the test as ignored.
– Yishai
Nov 6 '09 at 18:21
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Prompt for user input in PowerShell
... Thanks, @Rynant. Accepted answer for being the only one who actually answered my main question! ;) All the other information is really helpful too, especially as I'm still groping my way in PS.
– AJ.
Nov 23 '11 at 12:38
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Convert any object to a byte[]
... }
}
Note that obj and any properties/fields within obj (and so-on for all of their properties/fields) will all need to be tagged with the Serializable attribute to successfully be serialized with this.
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How to get a DOM Element from a JQuery Selector
...h:
$("table").get(0);
or more simply:
$("table")[0];
There isn't actually a lot you need this for however (in my experience). Take your checkbox example:
$(":checkbox").click(function() {
if ($(this).is(":checked")) {
// do stuff
}
});
is more "jquery'ish" and (imho) more concise. W...
Why does git revert complain about a missing -m option?
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By default git revert refuses to revert a merge commit as what that actually means is ambiguous. I presume that your HEAD is in fact a merge commit.
If you want to revert the merge commit, you have to specify which parent of the merge you want to consider to be the main trunk, i.e. what you want...
Unable to create a constant value of type Only primitive types or enumeration types are supported in
...I'm concerned about performance I should avoid doing this as it would load all data in memory first and then query it. Should I write raw sql for this scenarios?
– Arvand
Dec 28 '15 at 11:30
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List vs Set vs Bag in NHibernate
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NHibernate semantics:
List: Ordered collection of entities, duplicate allowed. Use a .NET IList in code. The index column will need to be mapped in NHibernate.
Set: Unordered collection of unique entities, duplicates not allowed. Use Iesi.Collection.ISet in code (NH prior to v4) or System.Colle...