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How to insert a text at the beginning of a file?
...ldfile > newfile
sed '1,1s/^/insert this /' oldfile > newfile
I've included the latter so that you know how to do ranges of lines. Both of these "replace" the start line marker on their affected lines with the text you want to insert. You can also (assuming your sed is modern enough) use:
s...
Add property to anonymous type after creation
...t know if that's really what you want. Some more details on the situation (including code samples) would be ideal.
Alternatively, you could create a container object which always had an ID and whatever other object contained the rest of the properties.
...
How do you rename a MongoDB database?
...(e.g.: dbName.collection) that describes every single collection and index includes the database name, so to rename a set of database files, every single namespace string would have to be rewritten. This impacts:
the .ns file
every single numbered file for the collection
the namespace fo...
Get the string representation of a DOM node
...ent DOM interface gets the serialized HTML fragment describing the element including its descendants. It can be set to replace the element with nodes parsed from the given string.
https://developer.mozilla.org/en-US/docs/Web/API/Element/outerHTML
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Gmail's new image caching is breaking image links in newsletter
...e any kind of query string in your image url like ?t=34343
your image must include png, jpg or gif as an extension.
your image url must be mapped onto your image directly.
If you need to use some proxy url for your protected images then your response must include the proper header like
Content-Type:...
Calendar returns wrong month [duplicate]
...thValue(); // Returns 1-12 as values.
Month enum
The java.time classes include the handy Month enum, by the way. Use instances of this class in your code rather than mere integers to make your code more self-documenting, provide type-safety, and ensure valid values.
Month month = today.getMonth...
Getting a list of associative array keys
...he prototype object of dictionary. But you typically don't want those keys included in your list.
For example, if you do this:
Object.prototype.c = 3;
var dictionary = {a: 1, b: 2};
and then do a for...in loop over dictionary, you'll get a and b, but you'll also get c.
...
Cutting the videos based on start and end time using ffmpeg
...00:03 -t 00:00:08 -async 1 cut.mp4
When re-encoding you may also wish to include additional quality-related options or a particular AAC encoder. For details, see ffmpeg's x264 Encoding Guide for video and AAC Encoding Guide for audio.
Also, the -t option specifies a duration, not an end time. T...
How to check if a string array contains one string in JavaScript? [duplicate]
...approach works, but looks a bit as misuse. I would rather recommend to use includes func, which is exactly what author is asking for. Below is an example: ['A', 'B'].includes('A') // >> true ['A', 'B'].includes('C') // >> false
– Stanislau Baranouski
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jQuery document.createElement equivalent?
...ished.
This gives you the ability to specify any arbitrary HTML you like, including class names or other attributes, which you might find more concise than using createElement and then setting attributes like cellSpacing and className via JS.
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