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Why is whitespace sometimes needed around metacharacters?
... that you left out the space on purpose so that people copying the command from your tattoo won’t accidentally run it and crash their machine ;)
– poke
Jan 17 '14 at 17:18
4
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Under what conditions is a JSESSIONID created?
... Tomcat.
It appears that, whether you like it or not, if you invoke a JSP from a servlet, JSESSIONID will get created!
Added: I just found that by adding the following JSP directive:
<%@ page session="false" %>
you can disable the setting of JSESSIONID by a JSP.
...
What's the difference between ngModel.$modelValue and ngModel.$viewValue
...wing ckEditor directive. At the bottom are two variations that I have seen from examples on how to set the data in the editor:
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How do I check for a network connection?
...or changes in IP address or changes in network availability use the events from the NetworkChange class:
System.Net.NetworkInformation.NetworkChange.NetworkAvailabilityChanged
System.Net.NetworkInformation.NetworkChange.NetworkAddressChanged
...
JavaScript: Is there a way to get Chrome to break on all errors?
... at Chrome Canary and I still see the button there. It's the fourth button from left, as shown at d.pr/i/DHwT - click once and it goes into Pause on All Exceptions, where a second click will take it to Pause on Uncaught Exceptions. A third click returns to the default of not pausing.
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What are commit-ish and tree-ish in Git?
...er (TL;DR)
Here's a complete list of commit-ish and tree-ish identifiers (from the Git
revisions documentation):
----------------------------------------------------------------------
| Commit-ish/Tree-ish | Examples
------------------------------------------------------------...
Static link of shared library function in gcc
... the same as if an executable was being linked: the only symbols pulled in from the .a static lib are those referenced (and unresolved) by the .so. This means that if binA references a symbol in libC.a, not referenced anywhere in libB.so, then even if binA links to libB.so, that symbol will be undef...
What exactly does big Ө notation represent?
...lanation
O(n) is asymptotic upper bound. If T(n) is O(f(n)), it means that from a certain n0, there is a constant C such that T(n) <= C * f(n). On the other hand, big-Omega says there is a constant C2 such that T(n) >= C2 * f(n))).
Do not confuse!
Not to be confused with worst, best and avera...
Is it unnecessary to put super() in constructor?
..., neither Eclipse nor IntelliJ provide any means of comfortably navigating from the constructor of the derived class to the constructor of the base class.
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When to use a “has_many :through” relation in Rails?
...role
end
This introduces a new table, and eliminates the group_id column from the user's table.
The problem with this code is that you'd have to update every where else you use the user class and change it:
user.groups.first.name
# becomes
user.group_memberships.first.group.name
This type of...