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clear javascript console in Google Chrome

... Chrome: console._commandLineAPI.clear(); Safari: console._inspectorCommandLineAPI.clear(); You can create your own variable, which works in both: if (typeof console._commandLineAPI !== 'undefined') { console.API = console._commandL...
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Undefined symbols for architecture armv7

... in the Library Search Paths value in the Build Settings and add -l{library_name_without_lib_and_suffix} (eg. for libz.a use -lz) to the Other Linker Flags section of Build Settings. You copy files into your project but forgot to check the target to add the files to. To resolve: Open the Build Ph...
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How can we generate getters and setters in Visual Studio?

..., you will have to have an instance variable for it: private PropertyType _property; public PropertyType PropertyName { get { //logic here return _property; } set { //logic here _property = value; } } Previous versions of Visual Studio al...
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How to fix bower ECMDERR

...n .bowerrc to get rid of the err ETIMEDOUT : { "directory": "app/bower_components", "proxy": "http://PROXYSERVER:PORT", "https-proxy": "https://PROXYSERVER:PORT", "strict-ssl": false } And this one to get rid of ECMDERR : git config --global http.proxy http://USER:PASSWORD@PROXYS...
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When to use .First and when to use .FirstOrDefault with LINQ?

...lements, if the sequence is initially empty. – SPIRiT_1984 May 16 '12 at 7:12 3 @RoyiNamir, yes i...
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Who architected / designed C++'s IOStreams, and would it still be considered well-designed by today'

... Several ill-conceived ideas found their way into the standard: auto_ptr, vector<bool>, valarray and export, just to name a few. So I wouldn't take the presence of IOStreams necessarily as a sign of quality design. IOStreams have a checkered history. They are actually a reworking of an...
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Hidden Features of C#? [closed]

...to automagically instantiate collections for me. private IList<Foo> _foo; public IList<Foo> ListOfFoo { get { return _foo ?? (_foo = new List<Foo>()); } } share ...
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how to File.listFiles in alphabetical order?

... can sort with Arrays.sort(). File[] files = XMLDirectory.listFiles(filter_xml_files); Arrays.sort(files); for(File _xml_file : files) { ... } This works because File is a comparable class, which by default sorts pathnames lexicographically. If you want to sort them differently, you can defi...
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Can't find the 'libpq-fe.h header when trying to install pg gem

...all pg -- --with-pg-config=/opt/local/lib/postgresql[version number]/bin/pg_config For OpenSuse: zypper in postgresql-devel For ArchLinux: pacman -S postgresql-libs share | improve this answer ...
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How to change the foreign key referential action? (behavior)

...tep process: Suppose, a table1 has a foreign key with column name fk_table2_id, with constraint name fk_name and table2 is referred table with key t2 (something like below in my diagram). table1 [ fk_table2_id ] --> table2 [t2] First step, DROP old CONSTRAINT: (reference) ALTER ...