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Language Books/Tutorials for popular languages
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I don't really like Stroustrup's book, my preference goes to Thinking in C++ by Bruce Eckel. And I prefer ebooks, because i can Ctrl+F. It saved my life when I did Algorithms I class (with book Introduction to Algorithms)
– Tian Bo
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Nokogiri installation fails -libxml2 is missing
I always worked my way around Nokogiri installation issues by following the documentation in the " Installing Nokogiri " tutorial.
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Get the device width in javascript
...ou can put on a different tag, one that is only used for this purpose. For my purpose the html tag works fine and doesn't affect my markup.
Useful if you are using Sass, etc: To return a more abstract value, such as breakpoint name, instead of px value you can do something like:
Create an eleme...
Linq: adding conditions to the where clause conditionally
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Simply I am using it in my where clause as
public IList<ent_para> getList(ent_para para){
db.table1.Where(w=>(para.abc!=""?w.para==para.abc:true==true) && (para.xyz!=""?w.xyz==para.xyz:true==true)).ToList();
}
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Set NOW() as Default Value for datetime datatype?
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As of MySQL 5.6.5, you can use the DATETIME type with a dynamic default value:
CREATE TABLE foo (
creation_time DATETIME DEFAULT CURRENT_TIMESTAMP,
modification_time DATETIME ON UPDATE CURRENT_TIMESTAMP
)
Or even...
How can I rename a database column in a Ruby on Rails migration?
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In my opinion, in this case, it's better to use rake db:rollback, then edit your migration and again run rake db:migrate.
However, if you have data in the column you don't want to lose, then use rename_column.
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Getting attributes of a class
...mbers and the various tests should be helpful.
EDIT:
For example,
class MyClass(object):
a = '12'
b = '34'
def myfunc(self):
return self.a
>>> import inspect
>>> inspect.getmembers(MyClass, lambda a:not(inspect.isroutine(a)))
[('__class__', type),
('__dict_...
Paste text on Android Emulator
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In a terminal, type adb shell input text 'my string here. With some characters escaped like \$ that'
Note that an alternative method for including spaces in the text is to substitute %s for each space character.
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Maximum request length exceeded.
...or Maximum request length exceeded when I am trying to upload a video in my site.
14 Answers
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Git: How to update/checkout a single file from remote origin master?
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@Mymozaaa The double dash designates that what follows is a file name. It's to prevent git from interpreting your file name as a branch in the unfortunate case you've got two with the same name.
– Joel Me...