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What is a good Hash Function?

...( h ^ p[i] ) * 0x01000193; return h; } unsigned long long fnv_hash_1a_64 ( void *key, int len ) { unsigned char *p = key; unsigned long long h = 0xcbf29ce484222325ULL; int i; for ( i = 0; i < len; i++ ) h = ( h ^ p[i] ) * 0x100000001b3ULL; return h; } Edit: La...
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Hash Map in Python

... It's built-in for Python. See dictionaries. Based on your example: streetno = {"1": "Sachine Tendulkar", "2": "Dravid", "3": "Sehwag", "4": "Laxman", "5": "Kohli" } You could then access it like so: sachine = streetno...
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How to validate an email address in PHP

...1\\x23-\\x5B\\x5D-\\x7F]|(?:\\x5C[\\x00-\\x7F]))*\\x22)))*@(?:(?:(?!.*[^.]{64,})(?:(?:(?:xn--)?[a-z0-9]+(?:-+[a-z0-9]+)*\\.){1,126}){1,}(?:(?:[a-z][a-z0-9]*)|(?:(?:xn--)[a-z0-9]+))(?:-+[a-z0-9]+)*)|(?:\\[(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){7})|(?:(?!(?:.*[a-f0-9][:\\]]){7,})(?:[a-f0-9]{...
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How to use wait and notify in Java without IllegalMonitorStateException?

...tiple multiplications simultaneously. That way you can optimise the work based on the number of cores, and you're using the higher level Java threading tools (which should make life easier). Write the results back into a receiving matrix, and then simply print this once all your Future tasks have ...
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Any reason to clean up unused imports in Java, other than reducing clutter?

...lain this. After attempting to increase memory settings (this is running a 64 bit JVM on a 64 bit CentOS!) to something well beyond where the clients could compile, I examined the checkins one by one. There was an improper import that a developer had used and abandoned (they used the class, auto-im...
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Displaying the Indian currency symbol on a website

...ot'); src: local('☺'), url(data:font/truetype;charset=utf-8;base64,AAEAAAANAIAAAwBQRkZUTVen5G0AAADcAAAAHEdERUYAQAAEAAAA+AAAACBPUy8yRQixzQAAARgAAABgY21hcGmyCE0AAAF4AAABamdhc3D//wADAAAC5AAAAAhnbHlmmuFTtAAAAuwAABAoaGVhZPOmAG0AABMUAAAANmhoZWELSAQOAAATTAAAACRobXR4KSwAAAAAE3AAAABMbG9jYUCgSL...
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How to determine the memory footprint (size) of a variable?

... not definate. It can depend apparently on the php version and possibly on 64/32 bit. share | improve this answer | follow | ...
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How to install a specific version of a ruby gem?

... ruby | 1:1.9.3 | http://ftp.uk.debian.org/debian/ wheezy/main amd64 Packages ruby | 4.5 | http://ftp.uk.debian.org/debian/ squeeze/main amd64 Packages Then install it: $ sudo apt-get install ruby=1:1.9.3 To check what's the current version, run: $ gem --version # Check f...
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Android: ProgressDialog.show() crashes with getApplicationContext

...getApplicationContext()); dialog.show(); } }); Based on the previous answers that suggested the context was the wrong one, i changed the getApplicationContext() to retrieve the context from the View passed in to the buttons onClick method. myButton.setOnClickListener(new...
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How to install grunt and how to build script with it

...OTE: You can use grunt-init for creating Gruntfile.js if you want wizard-based creation instead of raw coding for step 5. To do so, please follow these steps: npm install -g grunt-init git clone https://github.com/gruntjs/grunt-init-gruntfile.git ~/.grunt-init/gruntfile grunt-init gruntfile F...