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Odd behavior when Java converts int to byte?
...resent it as an int (32 bits) you simply copy the 1 to the left 24 times.
Now, one way to read a negative two's complement number is to start with the least significant bit, move left until you find the first 1, then invert every bit afterwards. The resulting number is the positive version of that ...
Remove or uninstall library previously added : cocoapods
...(alt+shift+command+K), and the warnings/linker errors were gone. Pods were now successfully uninstalled from the project.
– Mark Barrasso
Jan 30 '17 at 21:30
...
Hidden features of Ruby
Continuing the "Hidden features of ..." meme, let's share the lesser-known but useful features of Ruby programming language.
...
Updating address bar with new URL without hash or reloading the page
...
You can now do this in most "modern" browsers!
Here is the original article I read (posted July 10, 2010): HTML5: Changing the browser-URL without refreshing page.
For a more in-depth look into pushState/replaceState/popstate (aka ...
Visual Studio displaying errors even if projects build
...solution. It displays totally random errors, but the projects build. Right now, I have 33 files with errors, and I can see red squiggly lines in all of them.
...
How do you create an asynchronous method in C#?
... build your own asynchronous methods to consume. So I have this code right now that consumes my method:
3 Answers
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How to avoid reinstalling packages when building Docker image for Python projects?
...c66c7
As you can see above, this time docker uses cache during the build. Now, let's update requirements.txt:
# requirements.txt
pytest==2.3.4
ipython
Below is the output of docker build:
Sending build context to Docker daemon 5.12 kB
Sending build context to Docker daemon
Step 0 : FROM dockerf...
What is unit testing? [closed]
...er way to look at unit testing is that you write the tests first. This is known as Test-Driven Development (TDD for short). TDD brings additional advantages:
You don't write speculative "I might need this in the future" code -- just enough to make the tests pass
The code you've written is always c...
if (key in object) or if(object.hasOwnProperty(key)
...someMap.constructor will yield -> function Object() { [native code] }
Now, if you want to iterate through "someMap" you will have to do it this way:
const key
for(key in someMap ){
if (someMap.hasOwnProperty(key)) {
// Do something
}
}
We are doing so in order to avoid iterating over i...
Predicate in Java
...
static boolean isEven(int num) {
return (num % 2) == 0; // simple
}
Now, given a List<Integer>, you can process only the even numbers like this:
List<Integer> numbers = Arrays.asList(1,2,3,4,5,6,7,8,9,10);
for (int number : numbers) {
if (isEven(number)) {
...