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How can I check if a value is a json object?

My server side code returns a value which is a json object on success and a string 'false' on failure. Now how can I check whether the returned value is a json object? ...
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Remove header and footer from window.print()

... In Chrome it's possible to hide this automatic header/footer using @page { margin: 0; } Since the contents will extend to page's limits, the page printing header/footer will be absent. You should, of course, in this case, set some margins/paddings in...
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android on Text Change Listener

...rent than 0). field1.addTextChangedListener(new TextWatcher() { @Override public void afterTextChanged(Editable s) {} @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void onTextChanged(CharSequence s,...
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What is the meaning of #XXX in code comments?

... instead), but that's how I would interpret it. – Iiridayn Mar 6 '19 at 19:15 add a comment  |  ...
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How to fix the datetime2 out-of-range conversion error using DbContext and SetInitializer?

... I did that too ^. Added a custom date field to the asp.net identity ApplicationUser object then forgot to initialize it to something that made sense. : ( – Mike Devenney Nov 16 '16 at 19:...
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How to see what will be updated from repository before issuing “svn update” command?

... Above didn't work for me, had to run svn merge --dry-run --revision BASE:HEAD . – Znarkus Mar 10 '11 at 6:59 3 ...
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Find MongoDB records where array field is not empty

...nexpected results. For example: db.doc.find({'nums': { $gt: [] }}).hint({ _id: 1 }).count() returns the right number, while db.doc.find({'nums': { $gt: [] }}).hint({ nums: 1 }).count() returns 0. – wojcikstefan Mar 4 '17 at 17:51 ...
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How do you check “if not null” with Eloquent?

... documentation is still not very complete, it feels more like a bunch of guides. – aross Oct 17 '19 at 8:23 add a comment  |  ...
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How to read last commit comment?

... And yes, @Juh_, even though git gui doesn't linewrap for you, it's a good idea to use 80column text in commit messages, not line-per-paragraph. – Peter Cordes Dec 13 '14 at 1:06 4...
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How do I use jQuery's form.serialize but exclude empty fields

...]").serialize() // does the job! Obviously #myForm gets the element with id "myForm" but what was less obvious to me at first was that the space character is needed between #myForm and :input as it is the descendant operator. :input matches all input, textarea, select and button elements. [value...