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Entity framework code-first null foreign key
I have a User < Country model. A user belongs to a country, but may not belong to any (null foreign key).
4 Answers
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Is it possible to search for a particular filename on GitHub?
... This is no longer possible. The searches you link return the following error: "We could not perform this search. Must include at least one user, organization, or repository"
– hedgie
Sep 6 '16 at 16:15
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How to find the duration of difference between two dates in java?
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Hi first of all thank you so much for your short and nice answer, I am facing one problem on your solution like I have two date 06_12_2017_07_18_02_PM and another one is 06_12_2017_07_13_16_PM, I am getting 286 seconds instead I should g...
Test whether a list contains a specific value in Clojure
...ex 0!).
To add to the confusion, in cases where it doesn't make sense to call contains?, it simply return false; this is what happens in (contains? :foo 1) and also (contains? '(100 101 102) 101). Update: In Clojure ≥ 1.5 contains? throws when handed an object of a type that doesn't support the i...
Check if a string matches a regex in Bash script
...e your answer as it lets the date function deal with the dates and not the error-prone regexs'
– Ali
Feb 1 '17 at 1:38
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Struct constructor: “fields must be fully assigned before control is returned to the caller.”
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If you see this error on a struct that has an automatic property, just call the parameterless contructor from your parameterized one by doing : this() example below:
struct MyStruct
{
public int SomeProp { get; set; }
public MyStruct(i...
GET URL parameter in PHP
...perglobal: a built-in variable that's populated by PHP and is available in all scopes (you can use it from inside a function without the global keyword).
Since the variable might not exist, you could (and should) ensure your code does not trigger notices with:
<?php
if (isset($_GET['link'])) {
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Iterate all files in a directory using a 'for' loop
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the 'subdirs in current dir' is not working. I get an error: s was unexpected at this time
– InTheNameOfScience
Feb 26 '16 at 8:25
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Importing modules from parent folder
...t can matter if somewhere else then the parentdir, but in one of the paths allready specified in sys.path, there is another module with the name 'mymodule'. Inserting the parentdir as the first element of the sys.path list assures that the module from parentdir will be imported instead.
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FileSystemWatcher vs polling to watch for file changes
...ames and events, so increase it to the expected amount of files (trial and error). It does use memory that cannot be paged out, so it could force other processes to page if memory gets low.
Here is the MSDN article on buffer :
FileSystemWatcher..::.InternalBufferSize Property
Per MSDN:
Incre...