大约有 30,000 项符合查询结果（耗时：0.0511秒） [XML]
Variable interpolation in the shell
I have a variable called filepath=/tmp/name .
3 Answers
3
...
How to create index in Entity Framework 6.2 with code first
...te("MyIndex", 2)));
Using the above techniques will cause .CreateIndex() calls to be automatically created for you in your Up() function when you scaffold your next migration (or be automatically created in the database if you are not using migrations).
...
Error Code: 1005. Can't create table '…' (errno: 150)
...t and Collate options are the same both at the table level as well as individual field level for the key columns.
You have a default value (that is, default=0) on your foreign key column
One of the fields in the relationship is part of a combination (composite) key and does not have its own individu...
Is there any difference between __DIR__ and dirname(__FILE__) in PHP?
...R__ is evaluated at compile-time, while dirname(__FILE__) means a function-call and is evaluated at execution-time
so, __DIR__ is (or, should be) faster.
As, as a reference, see the Magic constants section of the manual (quoting) :
__DIR__ : The directory of the file.
If used inside an i...
Rails 4 image-path, image-url and asset-url no longer work in SCSS files
...ace images in your app/assets/images directory, then you should be able to call the image directly with no prefix in the path. ie. image_url('logo.png')
Depending on where you use the asset will depend on the method. If you are using it as a background-image: property, then your line of code should ...
Change default text in input type=“file”?
...lt;label for="files" class="btn">Select Image</label>
<input id="files" style="visibility:hidden;" type="file">
</div>
Below is the code to fetch name of the uploaded file
$("#files").change(function() {
filename = this.files[0].name
console.log(filename);
});
...
How to get key names from JSON using jq
...json
$ cat file.json:
{ "Archiver-Version" : "Plexus Archiver", "Build-Id" : "", "Build-Jdk" : "1.7.0_07", "Build-Number" : "", "Build-Tag" : "", "Built-By" : "cporter", "Created-By" : "Apache Maven", "Implementation-Title" : "northstar", "Implementation-Vendor-Id" : "com.test.testPack", "Implem...
How can I disable a button on a jQuery UI dialog?
...
If you're including the .button() plugin/widget that jQuery UI contains (if you have the full library and are on 1.8+, you have it), you can use it to disable the button and update the state visually, like this:
$(".ui-dialog-buttonpane button:contains('Confirm')")....
How do I access the host machine itself from the iPhone simulator
...
In swift 5 just call:
http://localhost:<port>/file_path
but you will need to add this part to the project Info.plist.
<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
...
How to uncompress a tar.gz in another directory
... specific directory, you can simply cd into your target directory prior to calling tar; then you will have to give a complete path to your archive, of course. You can do this in a scoping subshell to avoid influencing the surrounding script:
mkdir foo
(cd foo; tar -xzf ../bar.tar.gz) # instead of...