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How to assign a Git SHA1's to a file without Git?
...having Git installed. Note that "\0" is the NULL-byte, not a two-character string.
For example, the hash of an empty file:
sha1("blob 0\0") = "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391"
$ touch empty
$ git hash-object empty
e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
Another example:
sha1("blob 7\...
Input widths on Bootstrap 3
... way to do it with the build in functionality without using grid or adding extra css. Grids do not work well if you are dealing with help-block elements that need to go beyond a short input for example but they are 'build-in'. If that is an issue I recommend using extra css classes which you can f...
asp.net mvc: why is Html.CheckBox generating an additional hidden input
...rough to change it. Same goes with any other property, default value for a string is null. If you don't send a value it's null. In your example of setting a property to true in the constructor, that's honestly a bad design decision and it now comes to light because of how checkboxes work in http lan...
Getting a slice of keys from a map
...
For example,
package main
func main() {
mymap := make(map[int]string)
keys := make([]int, 0, len(mymap))
for k := range mymap {
keys = append(keys, k)
}
}
To be efficient in Go, it's important to minimize memory allocations.
...
Why use sprintf function in PHP?
...tf which means you can do much more than just inserting variable values in strings.
For instance, specify number format (hex, decimal, octal), number of decimals, padding and more. Google for printf and you'll find plenty of examples. The wikipedia article on printf should get you started.
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How to correctly close a feature branch in Mercurial?
...branch)
Another way is to close a feature branch before merging using an extra commit:
$ hg up feature-x
$ hg ci -m 'Closed branch feature-x' --close-branch
$ hg up default
$ hg merge feature-x
$ hg ci -m merge
$ hg heads
(1 head)
$ hg branches
default 43:...
(1 branch)
The first o...
Is !important bad for performance?
...to check the exact source and share this high level of knowledge is simply extraordinary and amazing. People like you are the ones who makes StackOverflow so popular and trustful. Thanks so much for answering and sharing this.
– Anmol Saraf
Dec 12 '12 at 8:04
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How to use Jackson to deserialise an array of objects
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In response to my own comment above, first parse the json string to a jsonNode and then access the property of the array like this: JsonNode jsonNode = MAPPER.readTree(json); String arrayString = jsonNode.get("data").toString(); Then follow @Programmer Bruce's instructions above. Li...
Most efficient way to remove special characters from string
I want to remove all special characters from a string. Allowed characters are A-Z (uppercase or lowercase), numbers (0-9), underscore (_), or the dot sign (.).
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What are the performance characteristics of sqlite with very large database files? [closed]
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So I did some tests with sqlite for very large files, and came to some conclusions (at least for my specific application).
The tests involve a single sqlite file with either a single table, or multiple tables. Each table had about 8 columns, almost all integers, and 4 indices.
...