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How to replace a string in multiple files in linux command line
....bak 's/foo/bar/g' *.xx moves all .xx files to the equivalent .xx.bak name and then generates the .xx files with the foo→bar substitution.
– Anaphory
Oct 4 '14 at 22:35
26
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How do I add a foreign key to an existing SQLite table?
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SQLite doesn't support the ADD CONSTRAINT variant of the ALTER TABLE command (sqlite.org: SQL Features That SQLite Does Not Implement).
Therefore, the only way to add a foreign key in sqlite 3.6.1 is during CREATE TABLE as follows:
CREATE TABLE child (
id INTEGER PRIMARY KEY,
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When should std::move be used on a function return value? [duplicate]
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met save for the fact that the source object is a function parameter,
and the object to be copied is designated by an lvalue, overload
resolution to select the constructor for the copy is first performed as
if the object were designated by an rvalue.
return foo; is a case of NRVO, so cop...
Responsive font size in CSS
... respond to the browser zoom/type size settings, such as if you press Ctrl and + together on the keyboard while in the browser.
Media Queries
You would have to look at using media queries to reduce the font-size at certain intervals where it starts breaking your design and creating scrollbars.
For e...
html (+css): denoting a preferred place for a line break
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By using
span.avoidwrap { display:inline-block; }
and wrapping the text I want to be kept together in
<span class="avoidwrap"> Text </span>
it will wrap first in preferred blocks and then in smaller fragments as needed.
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How to turn on/off ReactJS 'development mode'?
...he other answer assumes you are using external pre-built files from react, and while correct that is not how most folks are going to or should consume React as a package. Moreover, at this point most every React library and package also relies on the same convention to toggle dev time helpers off du...
library not found for -lPods
...tion to your project, Xcode knows about the project in the Pods/ directory and how to build libPods.a.
– Jonathan Tran
Jul 8 '13 at 0:59
13
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Why are we not to throw these exceptions?
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Exception is the base type for all exceptions, and as such terribly unspecific. You shouldn’t ever throw this exception because it simply does not contain any useful information. Calling code catching for exceptions couldn’t disambiguate the intentionally thrown excep...
What is java interface equivalent in Ruby?
Can we expose interfaces in Ruby like we do in java and enforce the Ruby modules or classes to implement the methods defined by interface.
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Distributed sequence number generation?
...m first seeing now.
You'll need to differentiate between sequence numbers and unique IDs that are (optionally) loosely sortable by a specific criteria (typically generation time). True sequence numbers imply knowledge of what all other workers have done, and as such require shared state. There is n...