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Python's many ways of string formatting — are the older ones (going to be) deprecated?
...
And with Formatter you can create custom formats such as those that datetime objects use. Also, since .format is a function, you can use it to create callable lazy formatting more directly: eg, fmt = '{} - {}'.format; fmt(a, b)
– Jon Cl...
Why should the Gradle Wrapper be committed to VCS?
... to build the v1.0 version of your software, that you have to hotfix for a customer which is still using this 1.0 version and can't upgrade. The gradle wrapper solves that: you clone the 1.0 tag from the VCS, build it using gradlew, and it uses the gradle version that was used 2 years ago to build t...
How to perform Callbacks in Objective-C
..., callbacks in objective C are done with delegates. Here's an example of a custom delegate implementation;
Header File:
@interface MyClass : NSObject {
id delegate;
}
- (void)setDelegate:(id)delegate;
- (void)doSomething;
@end
@interface NSObject(MyDelegateMethods)
- (void)myClassWillDoSome...
PHP & mySQL: Year 2038 Bug: What is it? How to solve it?
...the BEST PHP solution without changing from UNIX_TIMESTAMP format.
Use a custom_date() function. Inside it, use the DateTime. Here's the DateTime solution.
As long as you have UNSIGNED BIGINT(8) as your timestamps in database.
As long as you have PHP 5.2.0 ++
...
What does passport.session() middleware do?
...ectly you must include serializeUser and deserializeUser functions in your custom code.
passport.serializeUser(function (user, done) {
done(null, user.id);
});
passport.deserializeUser(function (user, done) {
//If using Mongoose with MongoDB; if other you will need JS specific to that sche...
JavaScript: What are .extend and .prototype used for?
...you extend the prototypes of objects such as Date, Math, and even your own custom ones.
Date.prototype.lol = function() {
alert('hi');
};
( new Date ).lol() // alert message
In the snippet above, I define a method for all Date objects ( already existing ones and all new ones ).
extend is usua...
ExecuteReader requires an open and available Connection. The connection's current state is Connectin
...re in the System.Data.SqlClient namespace.
All the above speaks against a custom DB-Class which encapsulates and reuse all objects. That's the reason why i commented to trash it. That's only a problem source.
Edit: Here's a possible implementation of your retrievePromotion-method:
public Promot...
What is the difference between DAO and Repository patterns?
...f doing so: the @Query annotation, or if that doesn't work, you can create custom repositories which are an extension that gives you the same power as if you write your own implementation from scratch.
– Stef
Jul 9 '15 at 10:41
...
dd: How to calculate optimal blocksize? [closed]
...tfile in the current directory. Alternatively, you can provide a path to a custom test file by providing a path after the script name:
$ ./dd_obs_test.sh /path/to/disk/test_file
The output of the script is a list of the tested block sizes and their respective transfer
rates like so:
$ ./dd_obs_t...
Python vs Bash - In which kind of tasks each one outruns the other performance-wise? [closed]
... own iso with yocto (yoctoproject.org), then you could not have it, as you customize every package yourself. But it's probably safe to say that for any major Unix OS now-a-days, it will come installed with python2 (at least) and perhaps python3 as well.
– dylnmc
...