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What are Unwind segues for and how do you use them?
...ew controller.
Imagine you have something a MyNavController with A as its root view controller. Now you use a push segue to B. Now the navigation controller has A and B in its viewControllers array, and B is visible. Now you present C modally.
With unwind segues, you could now unwind "back" from C...
How do I import other TypeScript files?
...rom Typescript 1.5
Just prefix what you want to export at the file level (root scope)
aLib.ts
{
export class AClass(){} // exported i.e. will be available for import
export valueZero = 0; // will be available for import
}
You can also add later in the end of the file what you want to export
{
...
How to reverse a singly linked list using only two pointers?
...ct Node {
char data;
struct Node* next;
} Node;
void print_list(Node* root) {
while (root) {
printf("%c ", root->data);
root = root->next;
}
printf("\n");
}
Node* reverse(Node* root) {
Node* new_root = 0;
while (root) {
Node* next = root->next;
root->next ...
Do you have to include ?
...in an images/ directory). The browser/webpage looks for favicon.ico in the root directory by default.
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Best algorithm for detecting cycles in a directed graph [closed]
...ces in the current depth first traversal, with its first element being the root node. If you come across an element which is already in the stack during the DFT, then you have a cycle.
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impro...
Hibernate: hbm2ddl.auto=update in production?
...tabase schema.
The awesome thing is that I can take a totally blank slate mysql database on my laptop, fire up the app, and right away the schema is set up for me. It also makes it easy to test schema changes by applying these to a local-dev or staging db first.
The easiest way to get started wit...
Do I need to create indexes on foreign keys on Oracle?
...int creates also an index... i.e. Jet Engine (MSAccess files, Firebird and MySQL)
– bubi
Apr 23 '15 at 15:19
17
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Python SQL query string formatting
...in a procedure. The call will just return the last query that was called.
MYSQL
DROP PROCEDURE IF EXISTS example;
DELIMITER //
CREATE PROCEDURE example()
BEGIN
SELECT 2+222+2222+222+222+2222+2222 AS this_is_a_really_long_string_test;
END //
DELIMITER;
#calling the procedure gives you ...
Build Android Studio app via command line
...
Android Studio automatically creates a Gradle wrapper in the root of your project, which is how it invokes Gradle. The wrapper is basically a script that calls through to the actual Gradle binary and allows you to keep Gradle up to date, which makes using version control easier. To run...
Emulator error: This AVD's configuration is missing a kernel file
...r the SDK files and will look something like:
emulator: found ANDROID_SDK_ROOT: C:\Program Files (x86)\Android\android-sdk
Make sure that location is correct.
In my case, ANDROID_SDK_ROOT was initially set incorrectly to my home directory. This is because I set it that way by blindly following t...