# Strict Content-Type Checking { #strict-content-type-checking }

By default, **FastAPI** uses strict `Content-Type` header checking for JSON request bodies, this means that JSON requests **must** include a valid `Content-Type` header (e.g. `application/json`) in order for the body to be parsed as JSON.

## CSRF Risk { #csrf-risk }

This default behavior provides protection against a class of **Cross-Site Request Forgery (CSRF)** attacks in a very specific scenario.

        return comparator;
    }

    /**
     * Gets the calculated weight for a project, representing its dependency chain length.
     *
     * @param project the project
     * @return the project's weight (higher means longer dependency chain)
     */
    public long getProjectWeight(MavenProject project) {
        // First check if weight is already calculated
        Long existingWeight = projectWeights.get(project);

## Contents properties

All properties except the file size are tied to the zip file. This means that modification date, headers, tags, etc. can only be set for the zip file as a whole. In similar fashion, replication will replicate the zip file as a whole and not individual files.

## Code Examples

   *
   * @since 11.0
   */
  /*
   * <? extends Object> is mostly the same as <?> to plain Java. But to nullness checkers, they
   * differ: <? extends Object> means "non-null types," while <?> means "all types."
   */
  @Override
  public ImmutableMap<K, V> getAllPresent(Iterable<? extends Object> keys) {
    Map<K, V> result = new LinkedHashMap<>();
    for (Object key : keys) {

func (x *xlMetaV2) DeleteVersion(fi FileInfo) (string, error) {
	// This is a situation where versionId is explicitly
	// specified as "null", as we do not save "null"
	// string it is considered empty. But empty also
	// means the version which matches will be purged.
	if fi.VersionID == nullVersionID {
		fi.VersionID = ""
	}

	var uv uuid.UUID
	var err error
	if fi.VersionID != "" {
		uv, err = uuid.Parse(fi.VersionID)

You should never save plaintext passwords, so, we'll use the (fake) password hashing system.

If the passwords don't match, we return the same error.

#### Password hashing { #password-hashing }

"Hashing" means: converting some content (a password in this case) into a sequence of bytes (just a string) that looks like gibberish.

Whenever you pass exactly the same content (exactly the same password) you get exactly the same gibberish.

# o rdbDiXmlResourceName: (NotRequired - Default 'rdb.xml')
#
# {CSharp} Quill(CSharp Seasar) Only:
# o quillDataSourceName: (NotRequired - Default null)
#
# *The line that starts with '#' means comment-out.
#
map:{
    # ====================================================================================
    #                                                                               Spring

If you use a `requirements.txt` file you could specify the version with:

```txt
fastapi[standard]==0.112.0
```

that would mean that you would use exactly the version `0.112.0`.

Or you could also pin it with:

```txt
fastapi[standard]>=0.112.0,<0.113.0
```

that would mean that you would use the versions `0.112.0` or above, but less than `0.113.0`, for example, a version `0.112.2` would still be accepted.

It is designed to be very simple to use, and to make it very easy for any developer to integrate other components with **FastAPI**.

## What is "Dependency Injection" { #what-is-dependency-injection }

**"Dependency Injection"** means, in programming, that there is a way for your code (in this case, your *path operation functions*) to declare things that it requires to work and use: "dependencies".

     * @see jcifs.smb.FileEntry#getFileIndex()
     */
    @Override
    public int getFileIndex() {
        return 0;
    }

    @Override
    public int getType() {
        /*
         * 0x80000000 means hidden but SmbFile.isHidden() checks for $ at end
         */
        switch (this.type & 0xFFFF) {
        case 1:
            return SmbConstants.TYPE_PRINTER;
        case 3: