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Most efficient way to increment a Map value in Java
...ood answers to this question--thanks folks--so I decided to run some tests and figure out which method is actually fastest. The five methods I tested are these:
the "ContainsKey" method that I presented in the question
the "TestForNull" method suggested by Aleksandar Dimitrov
the "AtomicLong" meth...
What is the official “preferred” way to install pip and virtualenv systemwide?
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If you can install the latest Python (2.7.9 and up) Pip is now bundled with it.
See: https://docs.python.org/2.7//installing/index.html
If not :
Update (from the release notes):
Beginning with v1.5.1, pip does not require setuptools prior to running get-pip.py. Ad...
How to view or edit localStorage
I created a Chrome extension and am using localStorage for storing data.
5 Answers
5
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Detect if Visual C++ Redistributable for Visual Studio 2012 is installed
... collected this info from a Windows 10 x64 box. I'm just going to go ahead and dump all of these redist versions and the reg keys I search for to detect installation.:
Visual C++ 2005
Microsoft Visual C++ 2005 Redistributable (x64)
Registry Key: HKLM\SOFTWARE\Classes\Installer\Products\1af2a8da7...
How to solve “Fatal error: Class 'MySQLi' not found”?
I am doing a tutorial and am getting this error:
22 Answers
22
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How to change package name of an Android Application
My keystore is corrupt, therefore the Android Market is requiring me to rename the app and resubmit it. However, whenever I go to edit the package names in Manifest and throughout the files, it gives me tons of errors.
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Best practices for overriding isEqual: and hash
...ive you do
result = prime * result + var
For objects you use 0 for nil and otherwise their hashcode.
result = prime * result + [var hash];
For booleans you use two different values
result = prime * result + ((var)?1231:1237);
Explanation and Attribution
This is not tcurdt's work, and ...
Returning IEnumerable vs. IQueryable
...ecute SQL to only select gold customers. The following code, on the other hand, will execute the original query in the database, then filtering out the non-gold customers in the memory:
IEnumerable<Customer> custs = ...;
// Later on...
var goldCustomers = custs.Where(c => c.IsGold);
This...
How to check that an element is in a std::set?
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this is specific for sets and maps. vectors, lists etc. don't have a find member function.
– wilhelmtell
Nov 9 '09 at 13:53
11
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Android Studio: Default project directory
Whenever I create a new project in Android Studio it wants to put it in a generic default folder at a location something similar to (dependent on OS - Ubuntu here):
...