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In php, is 0 treated as empty?
...ared, but without a value in a class)
Note that this is exactly the same list as for a coercion to Boolean false. empty is simply !isset($var) || !$var. Try isset instead.
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How to Import .bson file format on mongodb
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It's very simple to import a .bson file:
mongorestore -d db_name -c collection_name /path/file.bson
Incase only for a single collection.Try this:
mongorestore --drop -d db_name -c collection_name /path/file.bson
For restoring the complete folder exported by mongodump:
mongorestore...
Sequelize.js delete query?
...
Model.destroy({
where: {
// criteria
}
})
Sequelize Documentation - Sequelize Tutorial
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Get the Highlighted/Selected text
...d by involving jQuery since you need nothing other than the window and document objects.
function getSelectionText() {
var text = "";
if (window.getSelection) {
text = window.getSelection().toString();
} else if (document.selection && document.selection.type != "Control"...
How to iterate over a JSONObject?
...();
if (jsonObject.get(key) instanceof JSONObject) {
// do something with jsonObject here
}
}
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Java array reflection: isArray vs. instanceof
...s type before downcasting to a particular type which is known at compile time. For example, perhaps you wrote some code that can work with a Integer[] or an int[]. You'd want to guard your casts with instanceof:
if (obj instanceof Integer[]) {
Integer[] array = (Integer[]) obj;
/* Use the b...
Submitting a form on 'Enter' with jQuery?
...nt.preventDefault() vs. return false
Essentially, "return false" is the same as calling e.preventDefault and e.stopPropagation().
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Is the primary key automatically indexed in MySQL?
...dex, or is it implicit when defining the primary key? Is the answer the same for MyISAM and InnoDB?
9 Answers
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How to stop Visual Studio from “always” checking out solution files?
For apparently no reason, every time I open my solution, Visual Studio checks the sln file out.
8 Answers
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How to escape the % (percent) sign in C's printf?
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@Pablo Santa Cruz: this method to "escape" % is specific to printf, correct?
– Lazer
Mar 27 '10 at 12:20
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