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Optional Parameters in Go?
...hy of Go is to write code in a straightforward way. Just pass a struct and test for default values.
– user3523091
Jan 30 '16 at 23:23
10
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Loop backwards using indices in Python?
...as no way to tell the xrange to go backwards... (Since Python 2.6 it calls __reversed__().)
– Robert Siemer
Jun 21 '12 at 18:31
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Accurate way to measure execution times of php scripts
...otime — Return current Unix timestamp with microseconds
If get_as_float is set to TRUE, then microtime() returns a float, which represents the current time in seconds since the Unix epoch accurate to the nearest microsecond.
Example usage:
$start = microtime(true);
while (...) {
}
$...
How can I print the contents of a hash in Perl?
...
Easy:
print "$_ $h{$_}\n" for (keys %h);
Elegant, but actually 30% slower (!):
while (my ($k,$v)=each %h){print "$k $v\n"}
share
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im...
Extending an Object in Javascript
...new instantiation (read why you shouldn't use new), no super, no self-made __construct. You simply create Objects and then extend or morph them.
This pattern also offers immutability (partial or full), and getters/setters.
TypeScript
The TypeScript equivalent looks the same:
interface Person {
...
UITableViewCell, show delete button on swipe
...ource = self
}
// number of rows in table view
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.animals.count
}
// create a cell for each table view row
func tableView(_ tableView: UITableView, cellForRowAt indexPa...
git ignore vim temporary files
... other words, do not put anything in .gitignore or in core.excludes in $GIT_DIR/config. Put the info in $HOME/.gitconfig instead (as nunopolonia suggests with --global.) Note that "global" means per-user, not per-system.
If you want configuration across the system for all users (which you don't...
ADB Android Device Unauthorized
...loper options on the phone and click "Revoke USB debugging authorization" (tested with JellyBean & Samsung GalaxyIII).
3. Restart ADB Server:
Then restarted adb server
adb kill-server
adb start-server
4. Reconnect the device
The device will ask if you are agree to connect the computer id.
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What is the _references.js used for?
What is the _references.js file used for in a new ASP.NET MVC 4 project?
2 Answers
2
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Why declare unicode by string in python?
...racters in the string (that is, u'\u2665' is now legal). You can use from __future__ import unicode_literals to make it the default.
This only applies to Python 2; in Python 3 the default is Unicode, and you need to specify a b in front (like b'These are bytes', to declare a sequence of bytes).
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