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SQLAlchemy: Creating vs. Reusing a Session
... db_session.close()
connection.close()
Usage:
from mymodels import Foo
with db_session("sqlite://") as db:
foos = db.query(Foo).all()
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How to set custom location for local installation of npm package?
...o this by using the --prefix flag and the --global* flag.
pje@friendbear:~/foo $ npm install bower -g --prefix ./vendor/node_modules
bower@0.7.0 /Users/pje/foo/vendor/node_modules/bower
*Even though this is a "global" installation, installed bins won't be accessible through the command line unless ...
How do I get the n-th level parent of an element in jQuery?
...ermost element with 'container' class among parents
('#element').closest('#foo') // returns the closest parent with id 'foo'
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How to access java-classes in the default-package?
...ions API you can access any class so far. At least I was able to :)
Class fooClass = Class.forName("FooBar");
Method fooMethod = fooClass.getMethod("fooMethod", String.class);
String fooReturned = (String)fooMethod.invoke(fooClass.newInstance(), "I did it");
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Where is Xcode's build folder?
...sly created in Xcode3, I see an intermediate directory under build/ called Foo.build where Foo is my project's name, and then in that are the directories you'd expect (Debug-iphonesimulator, Release-iphoneos, etc, assuming you've done a build of that type) containing the object files and products.
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Node.js - use of module.exports as a constructor
...My module
function MyObject(bar) {
this.bar = bar;
}
MyObject.prototype.foo = function foo() {
console.log(this.bar);
};
module.exports = MyObject;
// In another module:
var MyObjectOrSomeCleverName = require("./my_object.js");
var my_obj_instance = new MyObjectOrSomeCleverName("foobar");
my_...
How to read lines of a file in Ruby
...
Ruby does have a method for this:
File.readlines('foo').each do |line|
http://ruby-doc.org/core-1.9.3/IO.html#method-c-readlines
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Can I escape html special chars in javascript?
... it on a fresh element if you just want to convert like this: const str = "foo<>'\"&"; $('<div>').text(str).html() yields foo&lt;&gt;'"&amp;
– amoebe
Nov 14 '17 at 21:46
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Rename all files in directory from $filename_h to $filename_half?
...f.png/' *.png
Update:
example usage:
create some content
$ mkdir /tmp/foo
$ cd /tmp/foo
$ touch one_h.png two_h.png three_h.png
$ ls
one_h.png three_h.png two_h.png
test solution:
$ rename 's/_h.png/_half.png/' *.png
$ ls
one_half.png three_half.png two_half.png
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Setting variable to NULL after free
...he call to free, it's not only not best practice, it's wrong. For example: foo* bar=getFoo(); /*more_code*/ free(bar); /*more_code*/ return bar != NULL;. Here, setting bar to NULL after the call to free will cause the function to think it never had a bar and return the wrong value!
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