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Mimicking sets in JavaScript?
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262
If you are programming in an ES6-capable environment (such as node.js, a specific browser with...
append new row to old csv file python
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258
with open('document.csv','a') as fd:
fd.write(myCsvRow)
Opening a file with the 'a' para...
Laravel Check If Related Model Exists
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202
In php 7.2+ you can't use count on the relation object, so there's no one-fits-all method for ...
ModelState.AddModelError - How can I add an error that isn't for a property?
... in Create(FooViewModel fvm){...} to see if the fvm.prop1 and fvm.prop2 already exist in that combination; if so, I want to add an error to the modelstate, then return the whole view. I tried:
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Calling remove in foreach loop in Java [duplicate]
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edited Dec 2 '14 at 11:11
mphizi
1322 bronze badges
answered Jul 28 '09 at 20:43
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Convert an ISO date to the date format yyyy-mm-dd in JavaScript
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Try this
date = new Date('2013-03-10T02:00:00Z');
date.getFullYear()+'-' + (date.getMonth()+1) + '-'+date.getDate();//prints expected format.
Update:-
As pointed out in comments, I am updating the answer to print leading zeros for date and month if...
Base64: What is the worst possible increase in space usage?
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248
Base64 encodes each set of three bytes into four bytes. In addition the output is padded to al...
See changes to a specific file using git
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Use a command like:
git diff file_2.rb
See the git diff documentation for full information on the kinds of things you can get differences for.
Normally, git diff by itself shows all the changes in the whole repository (not just the current directory).
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Is cout synchronized/thread-safe?
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In C++11, we do have some guarantees. The FDIS says the following in §27.4.1 [iostream.objects.overview]:
Concurrent access to a synchronized (§27.5.3.4) standard iostream object’s formatted and unformatted input (§27.7.2.1) and output (§27.7.3.1) functions or a standard C stream by mu...
How can I filter a Django query with a list of values?
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562
From the Django documentation:
Blog.objects.filter(pk__in=[1, 4, 7])
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