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JavaScript null check
... @afsantos: in reality I don't think that many (any?) values will convert to null; however, it's a best practice to use strict comparison (===) unless you really know what you're doing and want comparison after conversion (==).
– maerics
May 21 '13 at ...
Difference between map and collect in Ruby?
..., in C# (3.0)'s LINQ library, it is provided as an extension method called Select. Map is also a frequently used operation in high level languages such as Perl, Python and Ruby; the operation is called map in all three of these languages. A collect alias for map is also provided in Ruby (from Smallt...
How do I find an element that contains specific text in Selenium Webdriver (Python)?
... tag and if //* is categories it will not work as expected. If you need to select any specific then You can get it by declaring HTML Element tag. Like:
driver.find_element_by_xpath("//div[contains(text(),'Add User')]")
driver.find_element_by_xpath("//button[contains(text(),'Add User')]")
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Error: “The sandbox is not in sync with the Podfile.lock…” after installing RestKit with cocoapods
...hat by updating CocoaPods.
I. Project Cleanup
In the project navigator, select your project
Select your target
Remove all libPods*.a in Build Phases > Link Binary With Libraries
II. Update CocoaPods
Launch Terminal and go to your project directory.
Update CocoaPods using the command pod in...
Access Enum value using EL with JSTL
...ption 2, the compiler can not verify it, but at runtime the string will be converted into an enum using Enum.valueOf(Class<T> enumType, String name) which will trigger an ELException if the enum has no constant with that name. The expression will not just always be false.
...
Nodejs cannot find installed module on Windows
...writing the full path to them. It is useful, for example, then node app is converting local files, like less — if you install it globally you can use it in any directory.
node.js itself didn't look at the npm global dir, it is using another algorithm to find required files: http://nodejs.org/api/m...
Addressing localhost from a VirtualBox virtual machine [closed]
...-> Network -> Host-only Networks -> click the "+" icon. Click OK.
Select your box and click the "Settings" icon -> Network -> Adapter 2 -> On the "Attached to:" dropdown, select "Host-only Adapter" and your network (vboxnet0) should show up below by default. Click OK.
Once you star...
MySQL Server has gone away when importing large sql file
...r. To get their values, type in the mysql client:
> select @@wait_timeout;
> select @@max_allowed_packet;
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Non-recursive depth first search algorithm
...rsion you can't delete node's memory in visit function. This algorithm can convert tree to single-linked list by using "first_child" pointer. Than you can walk through it and free node's memory without recursion.
– puchu
Feb 20 '14 at 16:38
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How to match “anything up until this sequence of characters” in a regular expression?
...
I have noticed that this fails to select anything if the pattern your looking for does not exist, instead if you use ^(?:(?!abc)(?!def).)* you can chain to exclude patterns you don't want and it will still grab everything as needed even if the pattern does no...