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Difference between require, include, require_once and include_once?
...ld continue when not found, e.g.
great for templates referencing variables from the current scope or something
include_once
optional dependencies that would produce errors on subsequent loading or maybe remote file inclusion that you do not want to happen twice due to the HTTP overhead
But basical...
What is the difference between a mutable and immutable string in C#?
...to make a copy of it if you want to be absolutely sure it won't change out from under you. This is why mutable objects are dangerous to use as keys into any form of Dictionary or set- the objects themselves could change, and the data structure would have no way of knowing, leading to corrupt data th...
How to find a min/max with Ruby
...
You can do
[5, 10].min
or
[4, 7].max
They come from the Enumerable module, so anything that includes Enumerable will have those methods available.
v2.4 introduces own Array#min and Array#max, which are way faster than Enumerable's methods because they skip calling #each....
In Python script, how do I set PYTHONPATH?
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Is there a reason to prefer this answer over the one from @DavidZ ?
– Dror
Sep 8 '14 at 7:48
If ...
Entity Framework code first unique column
...he 900-byte limit for the maximum total size of all index key columns."
(from: http://msdn.microsoft.com/en-us/library/ms191241.aspx )
You can solve this by setting a maximum string length on your model:
[StringLength(450)]
Your model will look like this now in EF CF 6.1+:
public class User
{...
Android Studio: Plugin with id 'android-library' not found
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Instruct Gradle to download Android plugin from Maven Central repository.
You do it by pasting the following code at the beginning of the Gradle build file:
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath 'com.andro...
Comparator.reversed() does not compile using lambda
...dditional type information that fills this gap. This information is absent from the third line, so the compiler infers u to be Object (the inference fallback of last resort), which fails.
Obviously if you can use a method reference, do that and it'll work. Sometimes you can't use a method reference...
How do ports work with IPv6?
Conventional IPv4 dotted quad notation separates the address from the port with a colon, as in this example of a webserver on the loopback interface:
...
Measuring text width to be drawn on Canvas ( Android )
...this is very subjective and dependent on the font.
For example the width from measure text bounds may actually look too small:
However when adding an additional text the bounds for one letter looks normal:
Images taken from Android Developers Guide to Custom Canvas Drawing
...
How do I pipe a subprocess call to a text file?
...object or a file descriptor. The first is the default, stdout is inherited from the parent (your script). The second allows you to pipe from one command/process to another. The third and fourth are what you want, to have the output written to a file.
You need to open a file with something like open...