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Iterator invalidation rules
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C++17 (All references are from the final working draft of CPP17 - n4659)
Insertion
Sequence Containers
vector: The functions insert, emplace_back, emplace, push_back cause reallocation if the new size is greater than the old capacity. Reallocation ...
How to stop EditText from gaining focus at Activity startup in Android
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Excellent answers from Luc and Mark however a good code sample is missing. Adding the tag android:focusableInTouchMode="true" and android:focusable="true" to parent layout (e.g. LinearLayout or ConstraintLayout) like the following example will...
Running code in main thread from another thread
...hat I need to update it. Since the original answer was posted, the comment from @dzeikei has gotten almost as much attention as the original answer. So here are 2 possible solutions:
1. If your background thread has a reference to a Context object:
Make sure that your background worker threads hav...
How do I get the fragment identifier (value after hash #) from a URL?
...ting TLS 1.2 next week (30 June 2018), you will not be able to do payments from them at all. So that makes all these old crappy browsers useless for any ecommerce client.
– Schalk Keun
Jun 22 '18 at 12:05
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Throwing exceptions from constructors
I'm having a debate with a co-worker about throwing exceptions from constructors, and thought I would like some feedback.
1...
What is move semantics?
...e pointer and then set the original pointer to null (to prevent 'delete[]' from source object's destructor from releasing our 'just stolen data'). In effect, we have "stolen" the data that originally belonged to the source string. Again, the key insight is that under no circumstance could the client...
Echo a blank (empty) line to the console from a Windows batch file [duplicate]
When outputting status messages to the console from a Windows batch file, I want to output blank lines to break up the output. How do I do this?
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wget/curl large file from google drive
I'm trying to download a file from google drive in a script, and I'm having a little trouble doing so. The files I'm trying to download are here .
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How can I get the named parameters from a URL using Flask?
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Use request.args to get parsed contents of query string:
from flask import request
@app.route(...)
def login():
username = request.args.get('username')
password = request.args.get('password')
shar...
How to read file from relative path in Java project? java.io.File cannot find the path specified
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If it's already in the classpath, then just obtain it from the classpath instead of from the disk file system. Don't fiddle with relative paths in java.io.File. They are dependent on the current working directory over which you have totally no control from inside the Java code.
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